I'm agreeing with you guys about the saber. The inspiration taken from Darth Revan doesn't bother me really (something we haven't seen in the live-action films before) but that claymore-saber with the mini-sabers, as already said, doesn't quite look right and appears unpractical in a few ways. I'll give it credit for being different, but that's all for now. I'd sooner rather see a blaster and saber built together as one; that would be much more practical.

MakingStarWars describes the villain as looking like a crusador knight, so IF we do see that saber, or preferably a variant of it (anything BUT mini-sabers for the crossguard), here's hoping it will actually impress us and change our minds about it :)