Creature graphic support in DF is great... until a creature dies. Then it reverts to the tileset character. Then most creatures are displayed as a letter character that in no way resembles the creature corpse it signifies. So my idea to solve this is to sort creatures into a categories, with a category for each letter, both upper and lower case. The letter used will in some way resemble the creatures of that category. This would also be usable as an alternative to a graphics pack, with a reorganized mapping of creatures to glyphs. I've looked through the wiki, and most letters, plus a few additional characters are exclusively used to render creatures and text, so all these would be used for these new creature tiles. One limitation is, due to limited choices it is likely that the character letter will not always match the creature it will depict.
Example categories:
Bears.
bats and look alikes.
Sharks.
beaked men.
Whales and whale men.
cats.
humans, material men, and animal men that look more human than animal.
I'd like some feedback on this idea. Has anyone attempted this before? Would you use it? One thing I am unsure about is with TWBT, is it's possible to make the characters not resemble the original letters at all (as an alternative), or it there are still things you want to be legible in tileset, even with TWBT?