Yeah, I've seen that suggestion for many many years, but unlike evidently almost every other programmer in the known universe, I still use Caps Lock for its intended purpose (and yes, I know all of the ways I could avoid using it, but I still want to use it for that). I understand why people would like using Caps Lock for a CTRL key, as it reduces the stretch distance for many key combinations, but I don't find it enough of a problem to justify the change.

So, I basically don't mind CTRL right where it is. It doesn't bother me for the things I use it for.

For me, the two-handed combo of CTRL-[ is just a lot more work than the single-handed move of my ring finger to the ESC key. I don't have trouble getting my left hand back to the home row quickly after doing so either. Moving CTRL to Caps Lock would alleviate that some, perhaps, but I don't think it would be enough of an improvement to make me prefer CTRL-[ over Escape.