Nebulous
Legend
You know, now that i think about it, Wish in 4e should be completely removed as a spell or ritual in the PHB and relegated to something like an artifact in the DMG. It is a story tool, something so rare and powerful that a campaign could revolve around it. Creating a kingdom, changing reality, turning back time before a catastrosphic event. I would even go so far as to argue that Wish and Limited Wish SHOULD be in D&D, but the reins need to be tightened and given fully to the DM, not the whim of characters who just say, "Um, we all resurrect over there if things go sour." Which i've seen happen. 
Of course, potential for abuse still exists, but i think a small chapter in the DMG or a Dungeon article would cover it quite nicely.

Of course, potential for abuse still exists, but i think a small chapter in the DMG or a Dungeon article would cover it quite nicely.