I'm making a SWF Barbarian come U22 and Swashbuckling seems pretty effective for us, we can Swashbuckle with a Light Pick (1d4) to 18 x5 instead of a Dwarven Axe (1d12) 19 x4. I believe both the increased critical threat range, critical multiplier and SB goodies will pay off for losing Glancing Blows, especially 7% doublestrike and 6d6 scalable sonic damage on criticals, since Glancing Blows never crit and you can't get THF feats to increase Glancings at the same time you're taking SWF.
But I'm needing some help figuring out my enhancements, which are leading me towards discarding the Barbarian class itself. Barbs are known for their supreme criticals but all threat/multiplier effects in all 3 trees are Tier 5 except for Bond that only works below 50% HP.
Swashbucklers have Exploit Weakness and Coup de Grace for Tier 5, this isn't even a competition.
It seems pretty logical to simply stay in the Tier 2s of every tree but then I'm not sure I'm really getting enough DPS to justify this whole thing.
Would Barb levels still be worthy it without Tier 5s? How would you spend out the enhancements points?