Currently there is just one list available: the todo list.
It would be nice if you could make new lists and add climbs to them: for things like a planned tick list for a destination climbing area, all climbs in a famous climbing list (like 50 classic climbs NA, the GG&A, etc), or all climbs above a certain altitude (CO/CA fourteeners, etc etc).
Peakbagger.com takes this to the extreme but I think it would be useful here too.