A theme with all three is that they died, in some cases, in really powerful stories, and then came back, and since then nobody seems to have had a faintest clue what to do with them... I'm kind of worried about the same thing happening with Banshee, or even Cyclops, since post-resurrection stories tend to get 'oh, he's back, now what? Was there a story reason for this, a big story about him coming up, or was it just an editorial mandate?'