Well, the other day messing around with GUTS when I was doing the Skin Add-on for the Preacher, I found a way to avoid overwriting the wardrobe file and still add new entries to it.
Just like the case of the Spawnclasses, you can create a file with a unique name and it will merge it's entries with the original ones if it starts/ends with [WARDROBES][/WARDROBES]
For example this is the Wardrobe file I used for the Preacher Skin:
Wardrobesets_KVA.dat
Spoiler (hover to show) [WARDROBES] [FEATURE] <STRING>TYPE:HAIR <STRING>NAME:FEMALEHAIR EST 1 <STRING>MESH:media/wardrobe/estherian/esf_head_01.MESH <INTEGER64>GUID:51920141 <STRING>CLASS:Est_F <STRING>REMOVE:SCALP <STRING>REMOVE:HAIR <STRING>ADD:SCALP <STRING>ADD:HAIR [/FEATURE] [FEATURE] <STRING>TYPE:HAIR <STRING>NAME:FEMALEHAIR EST 2 <STRING>MESH:media/wardrobe/estherian/esf_head_02.MESH <INTEGER64>GUID:51920142 <STRING>CLASS:Est_F <STRING>REMOVE:SCALP <STRING>REMOVE:HAIR <STRING>ADD:SCALP <STRING>ADD:HAIR [/FEATURE] [FEATURE] <STRING>TYPE:HAIR <STRING>NAME:FEMALEHAIR EST 3 <STRING>MESH:media/wardrobe/estherian/esf_head_03.MESH <INTEGER64>GUID:51920143 <STRING>CLASS:Est_F <STRING>REMOVE:SCALP <STRING>REMOVE:HAIR <STRING>ADD:SCALP <STRING>ADD:HAIR [/FEATURE] [FEATURE] <STRING>TYPE:HAIR <STRING>NAME:FEMALEHAIR EST 4 <STRING>MESH:media/wardrobe/estherian/esf_head_04.MESH <INTEGER64>GUID:51920144 <STRING>CLASS:Est_F <STRING>REMOVE:SCALP <STRING>REMOVE:HAIR <STRING>ADD:SCALP <STRING>ADD:HAIR [/FEATURE] [FEATURE] <STRING>TYPE:HAIR <STRING>NAME:MALEHAIR EST 1 <STRING>MESH:media/wardrobe/estherian/esm_head_01.MESH <INTEGER64>GUID:51920151 <STRING>CLASS:Est_M <STRING>REMOVE:SCALP <STRING>REMOVE:HAIR <STRING>ADD:SCALP <STRING>ADD:HAIR [/FEATURE] [FEATURE] <STRING>TYPE:HAIR <STRING>NAME:MALEHAIR EST 2 <STRING>MESH:media/wardrobe/estherian/esm_head_02.MESH <INTEGER64>GUID:51920152 <STRING>CLASS:Est_M <STRING>REMOVE:SCALP <STRING>REMOVE:HAIR <STRING>ADD:SCALP <STRING>ADD:HAIR [/FEATURE] [FEATURE] <STRING>TYPE:HAIR <STRING>NAME:MALEHAIR EST 3 <STRING>MESH:media/wardrobe/estherian/esm_head_03.MESH <INTEGER64>GUID:51920153 <STRING>CLASS:Est_M <STRING>REMOVE:SCALP <STRING>REMOVE:HAIR <STRING>ADD:SCALP <STRING>ADD:HAIR [/FEATURE] [FEATURE] <STRING>TYPE:HAIR <STRING>NAME:MALEHAIR EST 4 <STRING>MESH:media/wardrobe/estherian/esm_head_01.MESH <INTEGER64>GUID:51920154 <STRING>CLASS:Est_M <STRING>REMOVE:HAIR [/FEATURE] [FEATURE] <STRING>TYPE:FACE <STRING>NAME:FEMALEFACE EST 1 <STRING>MESH:media/wardrobe/estherian/esf_head_01.MESH <STRING>BODYBLEND:media/wardrobe/estherian/ESF_FACE_01.PNG <INTEGER64>GUID:5192012111 <STRING>CLASS:Est_F <STRING>REMOVE:EYES <STRING>ADD:EYES [/FEATURE] [FEATURE] <STRING>TYPE:FACE <STRING>NAME:FEMALEFACE EST 2 <STRING>MESH:media/wardrobe/estherian/esf_head_01.MESH <STRING>BODYBLEND:media/wardrobe/estherian/ESF_FACE_02.PNG <INTEGER64>GUID:5192012112 <STRING>CLASS:Est_F <STRING>REMOVE:EYES <STRING>ADD:EYES [/FEATURE] [FEATURE] <STRING>TYPE:FACE <STRING>NAME:FEMALEFACE EST 3 <STRING>MESH:media/wardrobe/estherian/esf_head_01.MESH <STRING>BODYBLEND:media/wardrobe/estherian/ESF_FACE_03.PNG <INTEGER64>GUID:5192012113 <STRING>CLASS:Est_F <STRING>REMOVE:EYES <STRING>ADD:EYES [/FEATURE] [FEATURE] <STRING>TYPE:FACE <STRING>NAME:FEMALEFACE EST 4 <STRING>MESH:media/wardrobe/estherian/esf_head_01.MESH <STRING>BODYBLEND:media/wardrobe/estherian/ESF_FACE_04.PNG <INTEGER64>GUID:5192012114 <STRING>CLASS:Est_F <STRING>REMOVE:EYES <STRING>ADD:EYES [/FEATURE] [FEATURE] <STRING>TYPE:FACE <STRING>NAME:FEMALEFACE EST 5 <STRING>MESH:media/wardrobe/estherian/esf_head_01.MESH <STRING>BODYBLEND:media/wardrobe/estherian/ESF_FACE_05.PNG <INTEGER64>GUID:5192012115 <STRING>CLASS:Est_F <STRING>REMOVE:EYES <STRING>ADD:EYES [/FEATURE] [FEATURE] <STRING>TYPE:FACE <STRING>NAME:FEMALEFACE EST 6 <STRING>MESH:media/wardrobe/estherian/esf_head_01.MESH <STRING>BODYBLEND:media/wardrobe/estherian/ESF_FACE_06.PNG <INTEGER64>GUID:5192012116 <STRING>CLASS:Est_F <STRING>REMOVE:EYES <STRING>ADD:EYES [/FEATURE] [FEATURE] <STRING>TYPE:FACE <STRING>NAME:MALEFACE EST 1 <STRING>MESH:media/wardrobe/estherian/esm_head_01.MESH <STRING>BODYBLEND:media/wardrobe/estherian/ESM_FACE_01.PNG <INTEGER64>GUID:5192012151 <STRING>CLASS:Est_M <STRING>REMOVE:EYES <STRING>REMOVE:JAW <STRING>REMOVE:JAWSIDE <STRING>REMOVE:BEARD <STRING>ADD:EYES <STRING>ADD:JAW <STRING>ADD:JAWSIDE [/FEATURE] [FEATURE] <STRING>TYPE:FACE <STRING>NAME:MALEFACE EST 2 <STRING>MESH:media/wardrobe/estherian/esm_head_01.MESH <STRING>BODYBLEND:media/wardrobe/estherian/ESM_FACE_02.PNG <INTEGER64>GUID:5192012152 <STRING>CLASS:Est_M <STRING>REMOVE:EYES <STRING>REMOVE:JAW <STRING>REMOVE:JAWSIDE <STRING>REMOVE:BEARD <STRING>ADD:EYES <STRING>ADD:JAW <STRING>ADD:JAWSIDE [/FEATURE] [FEATURE] <STRING>TYPE:FACE <STRING>NAME:MALEFACE EST 3 <STRING>MESH:media/wardrobe/estherian/esm_head_01.MESH <STRING>BODYBLEND:media/wardrobe/estherian/ESM_FACE_03.PNG <INTEGER64>GUID:5192012153 <STRING>CLASS:Est_M <STRING>REMOVE:EYES <STRING>REMOVE:JAW <STRING>REMOVE:JAWSIDE <STRING>REMOVE:BEARD <STRING>ADD:EYES <STRING>ADD:JAW <STRING>ADD:JAWSIDE [/FEATURE] [FEATURE] <STRING>TYPE:FACE <STRING>NAME:MALEFACE EST 4 <STRING>MESH:media/wardrobe/estherian/esm_head_01.MESH <STRING>BODYBLEND:media/wardrobe/estherian/ESM_FACE_04.PNG <INTEGER64>GUID:5192012154 <STRING>CLASS:Est_M <STRING>REMOVE:EYES <STRING>REMOVE:JAW <STRING>REMOVE:JAWSIDE <STRING>REMOVE:BEARD <STRING>ADD:EYES <STRING>ADD:JAW <STRING>ADD:JAWSIDE <STRING>ADD:BEARD [/FEATURE] [FEATURE] <STRING>TYPE:FACE <STRING>NAME:MALEFACE EST 5 <STRING>MESH:media/wardrobe/estherian/esm_head_01.MESH <STRING>BODYBLEND:media/wardrobe/estherian/ESM_FACE_05.PNG <INTEGER64>GUID:5192012155 <STRING>CLASS:Est_M <STRING>REMOVE:EYES <STRING>REMOVE:JAW <STRING>REMOVE:JAWSIDE <STRING>REMOVE:BEARD <STRING>ADD:EYES <STRING>ADD:JAW <STRING>ADD:JAWSIDE [/FEATURE] [FEATURE] <STRING>TYPE:FACE <STRING>NAME:MALEFACE EST 6 <STRING>MESH:media/wardrobe/estherian/esm_head_03.MESH <STRING>BODYBLEND:media/wardrobe/estherian/ESM_FACE_06.PNG <INTEGER64>GUID:5192012156 <STRING>CLASS:Est_M <STRING>REMOVE:EYES <STRING>REMOVE:JAW <STRING>REMOVE:JAWSIDE <STRING>REMOVE:BEARD <STRING>ADD:EYES <STRING>ADD:JAW <STRING>ADD:JAWSIDE <STRING>ADD:BEARD [/FEATURE] [FEATURE] <STRING>TYPE:HAIRCOLOR <STRING>NAME:EST AQUA HAIR <STRING>TEXTURE:media/wardrobe/estherian/EHAIR_AQUA.DDS <STRING>ADD:HAIR <STRING>ADD:BEARD <INTEGER64>GUID:519201000 <STRING>CLASS:Est_F [/FEATURE] [FEATURE] <STRING>TYPE:HAIRCOLOR <STRING>NAME:EST DSEA HAIR <STRING>TEXTURE:media/wardrobe/estherian/EHAIR_DSEA.DDS <STRING>ADD:HAIR <STRING>ADD:BEARD <INTEGER64>GUID:519201001 <STRING>CLASS:Est_F [/FEATURE] [FEATURE] <STRING>TYPE:HAIRCOLOR <STRING>NAME:EST DSKY HAIR <STRING>TEXTURE:media/wardrobe/estherian/EHAIR_DSKY.DDS <STRING>ADD:HAIR <STRING>ADD:BEARD <INTEGER64>GUID:519201002 <STRING>CLASS:Est_F [/FEATURE] [FEATURE] <STRING>TYPE:HAIRCOLOR <STRING>NAME:EST TURQ HAIR <STRING>TEXTURE:media/wardrobe/estherian/EHAIR_TURQ.DDS <STRING>ADD:HAIR <STRING>ADD:BEARD <INTEGER64>GUID:519201003 <STRING>CLASS:Est_F [/FEATURE] [/WARDROBES]
That file contains all the new entries to the original wardrobe file added by Kva3imoda, and 'cause of it unique name it doesn't overwrite the original.
Hope this is useful for making more unique looking classes and still mantain compatibility