Okay, time to put a more detailed answer down!
1. A separate sample for punch & tail is already on the roadmap for a future update. It won't be in the first update to come out, since it's a bit of a bigger feature, but it's definitely something I still want to get done.
2. I like the idea of having a separate gain for punch & tail as well. I'll have to think a bit about this though, since I'm also going to look into outputting audio to more than just 2 channels, so for example channel 1 and 2 will be L/R of the punch, and 3 and 4 will be L/R of the tail. This would allow for more flexible effects on the elements separately. (I might do both of these though, since it'll be simpler for a user to just turn a knob on the UI itself, of course.)
3. This is a good idea, I'll put it on the list.
4. Definitely something I still want to have. Not sure about attack, because I believe that will introduce latency which I've been trying hard to avoid so far, but maybe we'll just have to live with that. It's on the list!
5. You're right, multiple people have mentioned this to me already. Will be looked into.
6. Yeah, sometimes the algorithms ("time machine" in particular) don't pitch well on certain samples. I'll be tweaking these algorithms over the next couple updates, trying to generally improve them.
7. That's a good idea, I'll think about it!
8. Advanced editing/tweaking like that has definitely crossed my mind as well. I'm not sure to which degree I will be implementing this, but I'm definitely looking into it for future updates!
9. The Distortion and the Kick FX sections are both separate, they are currently not connected to each other. I still have second thoughts about the Kick FX section, actually.. :) I'm not sure how useful it really is in practice. In theory, it was meant as a way to quickly record some cool kick effects by adjusting the distortion in an X/Y fashion, but in practice I personally don't use it all that much. I'm curious to hear your thoughts though!
10. Yeah, I'm aware of it, and already working on possible solutions. Mono-ifying the lowend by taking only 1 channel is what I'm probably going to end up with, but I'll need to do some testing to make sure it works nicely.
Thanks again for all this feedback, it really helps a lot!