I remember Seven Seas saying that too, pretty sure they get asked about it all the time. That being said, if Yen Press do decide to license it we can be sure it will get the best possible treatment, I wouldn't worry about that.
As much as I love Misaka, I would like to see more of what happens to Touma. There's just a lot more mystery surrounding him.
On that note, I've read Railgun 7, 07-Ghost 3 and Kimi ni Todoke 5-6. 07-Ghost is getting much better as it goes on and I've warmed to Teito more and more.