Ah, yes, but let's say I wanted to make a somewhat stripped-down FPS with, say, only four weapons (this is an example, but not what I'm considering per se). It would be nice to be able to configure the key remap menu to remove extraneous weapon slots (in this case, anything after '4') so as not to confuse the player into thinking there are more and perhaps they're missing something, etc.
For what it's worth, editing the C++ side of things isn't an option for me. I wouldn't even know where to start.