As a past Cakewalk/Sonar user, I find this aspect of the discussion quite interesting. There was a time, with Cakewalk/Sonar, when you only had to move the mouse over a window to make it active, and bring it to the front. Many users complained. They said it got in the way. Apparently, some people move the mouse around while they think so, the changing windows distracted them.
I don’t know about writing code, but maybe there could be an option to control this window-mouse relationship, so that those, like me, who scratch their chin while they think, could leave the “auto-activate” feature on, and those who move the mouse could turn it off.