Since transformation stories can have so much variety, here's a list of the kinds of TF I will and won't do.

Will do

- Human to animal TF
- Human to anthro TF
- Anthro to animal (feral) TF
- Animal to anthro TF
- Gender change TF (TGTF)
- Medical or scientific TF
- Monster TF
- Insect TF
- Scalie/lizard/dragon TF
- Robot TF

Might do

- Character TF (in other words. established characters from movies, TV etc.)
- Body modification
- Avian/bird TF
- Age regression (If the character(s) become underaged, then the story needs to be 100% SFW. The same applies to diaper-related themes)
- Age progression
- Mind swap/body swap

Won't do
( + = I lack experience with this theme currently. It may become available in the future)

- Inanimate TF
- Toonification
- Macro and micro
- Latex or goo TF +
- Simian (monkey/ape) TF +
- Petrification
- Huge weight gain (a moderate amount is fine, depending on species)
- Fish TF (Except anthro and fantasy species)
- Pool toy or rubber TF
- Plushification