I've looked over the PDF - skimmed it, as of now, to be exact. It looks nice, overall. I see you've adjusted the damage dice in places, and I see a lot of D6s where I think there used to be larger dice.
I've also noted a couple of 20/x4 martial weapons. I must say I find even x3 weapons to be a little difficult to handle, since a crit will usually insta-gib anything at lower levels, a x4 weapon is worse. As these effects occur only rarely, it's a questionable boost, IMHO.
I've also been thinking about the Weapon Finesse thing: How about changing that feat entirely, or rather, adding a significant detail: If you use weapon finesse on a weapon you may choose on your turn, before making your first attack roll, to forgo your Dex bonus to AC for one round, and instead add it to damage rolls? Off-hand weapons can only gain 1/2x Dex bonus, as per usual rules.