Settings that need faster access

[WHirsch]

Hitting the spacebar or similar hot key to repeat a command would be great as well.

I'd like that, but depending upon how much time and effort would be diverted from other development, I'm not sure that this is something that I'd request as a priority. Drawing tool commands are already sticky. Editing tools, otoh, are not activated until a selection is made. A fundamental change in the way the program works would be required to make, for example, the point to point move tool active pending a selection.