Raze: fair enough. Faster weapon speed of single handed was a balancing element I overlooked. Still, considering the progression chart of Single-handed, it appears very questionably "worth it" investing in Single-handed, even if you like that style.
Kein: I wasn't looking for which Expertise pwns. If some some Skills are great and others are marginal, then the end effect is that everyone pretty much opts for the same fraction of skills in their character builds, which also means that a wide open skill system like Divinity2 is much less open than it could be.
As an example, Diablo2 became the industry model of game balacing and unique character builds, only because Blizzard patched, repatched, repatched character skills and creature stats. At various stages, different character classes reigned, and then whined because they were nerfed or someone else got stronger. But over time, the skill patches balanced the game and enabled many viable builds.
So if Dual/Two-handed pwn, fine. If the others don't, maybe that should be looked at. There are a few skills that could be viewed as overpowered, and a number that could use more oomph. As a whole, the game has a rep for being too hard at early levels and too easy later on. Larien might be interested in solving certain balancing issues in their game.
Finri