Well, I'm not too sure on how viable it would be, but the general idea involves a further self-insert, but not one immediately useful. It occurs to me, if early anime continuity hasn't been sufficiently distrupted, that Jeidite would theoretically be stuck inside a big crystal somewhere in the bowels of the negaverse. The idea would involve self inserting into him, waking up, and eventually escaping.
As someone whom, up until the current point in time has probably been out of contact with just how much things have changed outside of the initial changes, it could make for an interesting sideplot up until he (I) figures out how to go about approaching the senshi- if at all.
Naturally, none of this would work if you guys blasted the guy into gory giblets, but as said, I haven't read that far yet.
Besides, I didn't see if anyone grabbed him already- if someone did, apologies, I'll think up a different concept.