Because we all have these tricked-out kakrcs with hidden gems inside.
I’ll start with this one:
map global normal w <a-i>w #select word
map global normal <a-w> <a-i><a-w> #select WORD
map global normal W '"_s.<ret><a-i>w' #subselect words from current selection
map global normal <a-W> '"_s.<ret><a-i><a-w>' #subselect WORDS
which repurposes w into a word selection mapping.
My reasoning is that the difference between default e and w is too subtle to warrant having both mappings, and I was never able to tell which I need in which circumstances anyway. So now I only move by words using e and b, which are symmetrical anyway.
I also think selecting the current word is an incredibly common thing to do, and it deserves a better mapping than the awkward <a-i>w