Storm gave up the position in favor of Kitty do not think they will make her a leader again.
Alex is impossible at this moment just got back to normal and many would have reason to suspect him after what happened to Mothervine.
Lorna does not have as much credit with the X-mens to become their leader and many would question her proximity to Magneto or the mental problems she has had in the past.
Kurt and Rogue could be good choices though Rogue will be busy with her adventures involving her wedding and paperwork or table work was never her strong point though she would be good as a field leader and think the same goes for Kurt.
As much as think about it can only see Marvel continuing with Kitty or promoting Jean. Personally think Kitty could stay in the job role a little more, maybe the next writer will be able to work with her better than Guggenheim.