It's a good thing its not up for re-election!
But the term modlet is just used to separate these from what we've been calling mods.
Modlet - Small standalone mod that is re-distributed and works with others
Mod - Some sort of overhaul, like Ravenhearst, Valmod, Starvation, etc.
Ideally, we'd get to a point where we'd call modlets as mods, and what we currently call mods as overhauls, or something to that effect.