Ha, that'd be amusing.
"Exodus of the Tyrants"

(since, apparently, they all abandon the Mountains of Mourn to go either to the Chaos Wastes or to follow Greasus to the Empire, and some off to other places unknown).
There can be two to three 3-game series that feature each of the major groups breaking off and going through the turmoils of the land. I'm picturing at least one of the games being a "Battle for the Pass" style with the Ogres trying to get across and some enemy army blocking them (Undead legions? Chaos legions?).
Also, the 3rd game of the Greasus-saga can be his chronicled death, and the ending of the Ogre tribes (since that's the vibe I'm getting from GW stuff) as they then get boxed up and "tamed" by desperate Imperial forces trying to get some extra fodder for the losing battle against Nagash and against Chaos. It could be like a 3-way battle, with the Ogres in a "last stand" position in the middle, with Empire forces attacking from one edge and Chaos on the other, with the winning team being that who kills Greasus in CC; Ogres "win" by keeping him alive or by protecting some objective/"watchtower" in the middle, but are outmatched and outgunned on both sides.
How's that for some good ideas?

38 Gnobs! Almost on my 4th Pack of Trappers! Exciting
Gibblet, Nibblet, Crunchybit, Snorti, Lullzee, Wakezee, Wardler, and Primo! (For sharing the Forum Primer to help out a new member! )
New book WLD: 21/11/3 - Got trounced by one of the "Khaine" elf armies... Stupid new rules...