I find that one of my most common actions is to insert a space, therefore I am thinking about changing the spacebar to insert a space. Right now I rarely use the space bar in normal mode, which is tragic because it is the most accessible key on the board, so by logic it should be mapped to something useful.
The normal mode use is to move forward one space (like l), the difference being that l actually means "move right" and space means move one character forwards, which means that space can move forwards past end of line, but l cannot.
It would seem to make sense to change l to have the space behavior and change space to insert a space.
Are there any gotchas or non-obvious problems with this idea?