Hello Tomi
I think we have enough regular creatures but if you want to make more knock yourself out. What I would like to see if more fantasy and useful type creatures. Fae and Dire animals sound awesome. I do not thing Dire animals should not be tamable. A Legendary Animal trainer should be able to tame nearly anything: Dire Critter, Dragon, Women, and all the other Evil beasties. Cause really, are they Evil, or do they just think you or your pocket book look yummy? I would actually like to see the Fae / Dire thing expanded.
Fae = faster, more agile, dexterous, etc. Better at dodging
Dire = slower, stronger, tougher, etc. Thicker hide
Mutant = Could apply to any animal including Fae and Dire, even stronger, faster, tougher, damaging, etc. Could even give weird effects such as 2 heads, iron skin, pink fur with white horns
If you are getting hung up on Dire = Evil then use a different name. Seelie and Unseelie or Fae and Trogg or whatever but personally I like Dire.
Other ideas would be: (not sure if these are doable)
1 Flying pets? Eagle, Fae Eagle, Dire Eagle
2 Working pets? Got a thing called a Nith Mason. Thought wow, it would be cool if it really was a mason. Not sure is this is doable but it would be very coo if there were critters that when trained do tasks. Carry things, eat body parts, smooth stone, train your dwarves in wrestling, impregnate your spouse-less dwarves....or maybe not.
3 Growable animal food? I am really getting tired of my entire map being turned into a wasteland by a couple animals.
4 Growable Wood? Plant a bunch of wood bearing plants on a farm plot and have your woodcutter turn them into logs.
Also, I am having trouble with traps. I built a cool trap system that should have been the death of a many enemy but instead of walking into it the enemies just stand in the corners of the map until they get board and leave. I don't even have to close the gates. It makes me sad....
The animal eating all the grass thing is also very irritating. If we cannot make animal food then can we make it so that walking on the grass and eating it doesn't kill it or if it does kills it very slowly? Or make it grow back very quickly.
Just some ideas. Take them or leave them. I love what you do.