Hi Herbert – glad you had a nice surprise there! 😉
Our plan is to have some control over your lines for the next large upgrade (6.0). I am not thinking like spline nodes and tangents, that would not be fitting for Animation Papers sort of “analogue” style. But some kind of nudging would be great I believe. So you can fix less precise lines or do close in-betweens and such by just pushing/adjusting existing lines a little. (again without any degradation of the line).
The requests you listed at the end is all planned for. Especially when we get to do Preferences, there will be room for much of it. And the ability to tear off the X-sheet for another display – you convinced me of that already! 🙂
We are using multithreaded a couple of places, but more important places are possible and will come. In general we have room for optimisations all over the place. So you should hopefully feel the improvements in speed as we get them done.
Thanks very much again!