It didn't feel like such a bad arc, though to a degree I agree with Archie: After Railgun anything would have been fine. But it's true this wasn't very intensive and focused. Too many characters that were, by necessity, left quite superficial. The Kanzaki visiting Touma scene was nice, though.

As the next arc features Mikoto, it should be jolly good, assuming Touma is involved. And since this is his series, I don't see why he wouldn't be.