Thank you very much for your suggestions! 1 and 2 are already planned. One of the next few updates will have a male character, and I may add an option to change the genitalia of existing characters. There will also be feral on player scenes with the male update, and a female character option.
For 2, I'd only thought of cunnilingus, but I love the other ideas and will be putting them on the to-do list!
For 3, I will be adding some vore scenes and micro stuff, but this will likely be a pretty later update, with a unique character that has these "powers."
I probably won't do 4 due to the complexity of it, and that sort of rendering multiple characters less valid. There will be more submissive and dominant characters with completely different dialogue. The next planned character will be a male snow leopard, with a more dominant personality.