Yeah, make a script that toggles your pick box size to different values, and just bind it to the keys/shortcuts you'd usually use for switching between vert/edge/face/uv modes.
Ha-haaaa! Look what I managed to select. Yes, that one tiny little corner of a polygon. Even with Maya defaults options no one could select that :P So yeah I followed you guys suggestions and duplicated all the F8 F9 F10 F11 F12 (and the ctrl-FX shortcut I have that convert from one mask to the other) commands to the…