fists do not use any wpf. For they are not a weapon you can have proficiency in. You're always proficient in them. Sad, I know.
Glove weight increase punch damage thanks to crpg devs.
Strength and powerstrike increase all damage (including punches/kicks)
IF PLAYING A BOXER: You still must carry a weapon! Carry it to battle, block in tight situations, then bam punch them to death. You could keep it sheathed for all anyone cares, but you'll die in a dumb situation then.
Can be a cheap weapon, but the whole thing is you must carry one, you can't dodge the upkeep. It makes adminning leechers hard if we make an exception, so that is a strict rule.
I'll note that I'm not 100% sure on kick damage, but I find it hard to imagine it being unaffected by strength and powerstrike. It'd be a simple test too.
Unarmed blocking negates all other unarmed attacks coming at you, but doesn't do anything against swords, save for giving you a lower damage hitbox compared to YOUR FACE. They'll hit your limbs for decreased damage.