Hypergrids: they need to drop something kind of cool that make them worth the effort once you have all the drops. Maybe make a rare drop (like something similar to the dark smuggler's cache) to keep them worthwhile.

Silithion Hive Colony: Not as important, but would be nice if same was true here as well. would keep interest in these npc's up and not make them one of those (purging) npc's like the hypergrids.

For higher levels: the refineries - we need a new one. Perhaps one that is levels say 600 + or so?

Just some small ideas for NPC's to keep some fun in the game so to speak. The higher level NPC's that take groups were fun back when they were a challenge and the only that is even remotely tough anymore is the warp thingy. Rest are just energy hogs now....and who has energy to burn nowadays for lackluster rewards?

Just add the energy sac drop to the hives.
I would love hypergrids to have some better use as well.

Why not just add a chance of it dropping rescued prisoners. The Sha'din Ambusher did this, so why not the HyperGrid's.

Hives are a little too easy to lock on, sacs would be a one time improvement, while prisoners are not. Then again, I suppose it all kind of depends on the chance of getting them.