Toys are gone, the item type is called Illumination in Mdf and is used for braziers, candles and similar objects.
Many object types does not hurt Fps, but many objects do. Its not the variety, but the amount thats bad.
Warlock teleport lacks one correct tag atm, as does that liquid spawners. Roses changed/added a few extra arguments and I didnt notice in the last update. I think a fix has been posted in the Warlock Bug Report thread, but it would be best to talk to Roses directly.
Special leather: Check the netherbark leather. Its steel grade and temp immune, maybe you can use it somehow. The needed plants currently only come from the third cavern.
Animal care: Dwarves also have some features like animal skill training, manual feeding of grazers, neutering or medical treatment and armoring them in iron/steel armor. Maybe any of this helps. But I have to say, your pets are slready awesome. I only changed the duration of the sleep effect on soul wisps for Warlock mode, I think i set it to 5000 ticks.
Aummoninh HFS creatures mostly results in uncontrollable civ member demons that hang around the meeting area or untrainable pets. Same with FBs. They also need actual procedually generated demons, so if a player gens a world with demon number set to 0, it will result in error messages. Its more an easter egg, something for fun than a real thought through feature.
Industries based on bone: Ironbone/Bloodsteel? You dont have to, but at least these things already exist.
Smoking currently is slightly bugged. I can make it Removebadthoughts all, but not Removebadthoughts Him. In short: I can use the ruby script behind it to only affect all civ members, not only the worker, because its ruby, not lua. Maybe you can find s better solution.
Curious what you will do with playing/gambling, I never found a good way to use this.
Shouldnt Succubi torture for fun? (Dungeon Keeper style?)