You're not the only one. Of the crew going to Limbo, Pixie and Anole have arcs post-Second Coming, Dazzler has a one-shot coming out, Gambit and Sam are leading characters in other books, and Magik just got back from Limbo, so I doubt they're ditching her again so soon. Northstar and Trance, however, haven't shown up in any preview art or covers for the post-crossover Heroic Age (which isn't damning, as they're both generally minor characters anyway, but it's not putting me at ease either). That and...well, Yost has a reputation for mistaking "killing off little-used characters" for "dramatic storytelling". I think the only thing Northstar has in his corner is the fact that he was killed and resurrected within recent memory, so it'd be a bit soon to go back to that well. Poor Trance doesn't even have that, Yost loves to pick on the X-Kids, the fact that she doesn't even have a physical body in Limbo would make hers the most curve-ball (and thus "shocking") of possible deaths, and she shares a given name with the new mutant messiah, so I'd be most concerned for her. Considering, though, that this is a team made up of characters who had nothing else to do during this cross-over, could be grim either way. I'm just hoping that I'm giving Yost too little credit here.