I've got a Dwarf 18R/2F Tempest who hasn't used his free feat swap yet. He took Improved Crit:Ranged, and I was considering swapping that out for Weapon Focus:Slashing (he already has IC:Slashing, as well as Toughness and the feats necessary for Spring Attack). He does a lot of Epics, and pretty much only uses his bow for Manyshot, otherwise sticking to his various dual Dwarven Axe sets. He normally doesn't have problems hitting most mobs or bosses even with Power Attack on, so I'm not sure if there's be a huge benefit in making that swap. I love seeing the big crit numbers when he's using his bow, but given how seldom he uses it I'm starting to think I might be better off increasing his to-hit with axes instead.
Any thoughts appreciated.