I have vertical taskbar and i feel the distance between buttons may be painlessly reduced to ~50% of current.

This will save place for like 5 or more buttons, which is big improvement for me personally as I frequently have many windows opened.

Will there be a feature to make it on vertical taskbars?

when 7+TT is not loaded, i can just drag files on top of buttons.

if 7+TT loaded, i can't just drag, but shift+drag works. it somewhat fixes the problem. but other problem is wider and i'll add new issue for it