I understand. Holding one key is better. And having all the different options for something people use so much are great. I’ll note this suggestion of yours! Thanks a lot!
Yeah, holding Ctrl can lead to undesired stuff. Was it you who mentioned using undo (Ctrl Z) a lot while drawing? This (also) led to accidentally changing pen size/opacity. So actually, in the current internal version, we are now using Alt to hold for changing pen settings. Works much better! This is part of next release (the beta).