I can't help remapping ; to : and vice-versa. Can't think of the last time I needed the default ; and sparing my pinky from having to hit shift every time I want to ;q is a game changer. Obviously, that's annoying to change in every vim install but I just have a very light .vimrc that I curl in every new box
I use a git repository for my configs that also includes scripts to install the configs and packages for different environments from the bare minimum to a desktop environment.
I’ll try remapping :, sounds like a good idea