Thank you for your detailed suggestions, I will take note of them all and consider them.
#2 Is at least partly possible already with a bit of a workaround, you can map the keyboard shortcuts to a button/switch on your transmitter with a program such as this:
Windows: http://joytokey.net/en/
Mac: http://alternativeto.net/software/joytokey/?platform=mac
Linux: https://github.com/AntiMicro/antimicro
And as for #9, the CA effect is intentional, but perhaps I should remove that. I can agree it is a bit too pronounced currently, and the best thing might just be to get rid of it completely.