What makes fighting with more than 1 weapon viable?

[Solo]

Sure, why not?

[ImperatorK]

Okay. Then that's done. That was easy.

[Jackinthegreen]

Shame the prereqs on Slashing Flurry are such a pain.

While definitely going into homebrew territory, I'd say there needs to be a class feature to ignore some of the prereqs on feats.  Not ignore all of them, just one or two parts to make it level appropriate.  I'd reckon Slashing Flurry would be appropriate no higher than level 6 or so.  Take out the Weapon Mastery bit and lower the BAB requirement and it fits for a level 6 character.

Also, Crescent Knife is great for single weapon or TWF.  And it's slashing, so getting Slashing Flurry with it would be rather nice.

Used with Braid Blade... Fun times.

[zook1shoe]

I've always been a fan of Lightning Maces and Aptitude weapons when TWF (oops missed someone else saying it)

If you want to avoid requiring pounce builds, check out Aptitude Splitting great crossbow + TWF and that hand crossbow feat in the drow book.