The possibility of different types of vore only exist as 'flavour.' Like I might change the internals to something else like for unbirth. But there most likely won't be any new significant animations, I'm so over spritework for the player at this point. It would be so nice to have properly implemented alternative vore styles but it's far too much for me to pull off.
I might one day redo parrying, but I never want parrying and dashing to be too strong. If the defensive abilities are too strong, then they invalidate defensive stats.
Good to hear you find it fun!
I understand for sprite reworking as many times before I had to do that and was a pain, I'm fine with different internals as such.
As for parrying I believe you could maybe give damage boost/guaranteed crits/speed boost/etc, that would give it a lot more uses for offensive abilities, I would also say that you could reduce the parry active frames to make it more challenging but also more rewarding.
And finally, don't stress yourself out, I hope you the best