Interesting, I'd say MAs are much too cheap for what you get. 4 or 5 points for 2 Damage Classes, +2 OCV and +2 DCV seems really underpriced to me.
Compare:
Katana 2d6 KA, used with Martial Arts defensive strike
35 points, 2d6 KA dmg, ocv +1, dcv +3
Sword 2d6 KA, used with combat levels
2d6 KA dmg, 2point levels: 1, 3point levels: 3 (and these do not cover ranged attacks!)
30 + 2 + 9 = 41 points.
Martial arts was 6 points cheaper, so where exactly is it too expensive?? We are having a large issue on the 150 points (disads included) level with everyone wanting to take MA's because they are better than CLs... Just use MA with Killing Melee weapons, you only get 50% of the DC bonus but that's still better.
(Offensive strike: 4 DCs, makes 2 DCs on KAs. That usually costs 10 points, but in MA you get it for 5 and some CV for free)
Just don't be fixed on the stereotype characters like bricks, Energy blasters and MAs, if you try to mix some powers, you'll find large balance issues