I would like to see these added
Mercurial weapons would just be nice for higher crit mulitiplier, nothing more really, maybe require a certain amount of str for usage?
14 str for small weapons (daggers and short swords)
16 str for large weapons (long sword and bastard swords)
and
18 str for huge weapons (great swords/ straight edged great axes)
also monkey grip should be a trainable feat when the player has 26+ base strength, oversized 2wf, a bab of 16-18, and maybe have improved 2wf or greater 2wf. So by level 16-18 you can have 2 great swords. or make it an epic feat, cuz by that point mobs have so much health anyways. Of course there will be penalties. since racial size bonus/penalties dont exist here (or dont seem to exist) make it -3 to attack with off hand and -1 with main hand.
Mainly fighters, paladins, and barbs will be doing this.
Finally on this post, allow artificers and mechanic rogues to upgrade regular crossbows into repeaters. I dont play either, but crossbows just generally seem useless. Maybe at the cost of trap parts? This isnt much here, but at least then crossbows will have more purpose then being broken down into essences. Cuz who are you fooling, do you really see anyone using a crossbow that isnt a repeater? Cuz really i havent, its either repeater or bow.
*edit*
also this wouldnt be too bad for the mercurial weapons mainly due to the fact that even a dex build knows that str still affects, damage, so they need to have some str anyways.
the monkey grip can expand out to higher str requirements for duel wielding mercurial weapons (maybe +1 or +2 more to str for duel wielding)