I had this idea after finding "Makubex (Mendelevium) Modder's Awakening - Avatar Mod".
This simple mod replaces all characters' portraits with a 3D version (exept for Edea, Kiros and Ward). This mod requires Tonberry in order to work.
Avatar comparison:I tried to make the 3D avatars as similiar as possible to the originals (angle/position/proportions etc) but Quistis and Selphie went bit-chy about it
Download Link I made this starting from Mcindus' "SeeD Reborn" mod. If you alredy have that mod (you totally should, cause it's awesome) potentially, you could just get the "fa" folder from my download link (ignoring the "NewAvatars_hm" file), put it inside the "textures" folder and override it, and you should have 0 problems .
However, this mod can be made indipendant from SeeD Reborn, (you know, just in case). To do that, put the hashmap file "NewAvatars_hm" in the "tonberry\hashmap" folder.
By default, i left Laguna and Seifer's original avatars ('cause i prefeer them). But you can have their 3D version if you want so. Just rename the X/Y pictures inside the folders and override the default pictures.Special thanks to Mcindus. Basically i just pasted the 3D portraits (found in internet) on top of his SeeD Reborn avatars pictures; also he's the one who told me how to do the hashmap stuff.