- quick lines - current you can change Drawing mode to "Lines", and it can be also saved in brush. Quick line painting (move then long-press gesture) is planned for version 1.4.
- lock transparency keyboard shortcut - we will add it soon
- custom shortcut - we will consider implementing it later this year, maybe in version 1.5
- stamp brush thumbnails instead of stroke - i will consider that for version 1.4. In fact it was already implemented in development phase, but we decided to change that to strokes.
- faster brush loading - it will be faster after changing thumbnails strokes to stamps
- permanent HSL editor - this is planned for version 1.4, however i'm not sure how it should work. I'm open to suggestions. Remember that it cannot make interface clunky, it must be something smart.
- small lag after closing brush editor - this happen because app prepares brush to be ready to use (some scaling etc), for some brushes the lag may be noticeable. Currently i don't have an idea how to improve that. I will do some researches soon.
- save in bg - not possible sorry. Saving needs a lot of GPU tasks to be made, on iOS GPU operations cannot be made in background. The slowest part when saving is generating document png preview - used then in "Quick Preview", export etc. But it is very important to have it always up-to-date.
- movable UI elements - maybe in the rather distant future