I wonder if you could list multiple copies of an MMO game client on an app store, with each client having a different price and providing different in-game aesthetic effects like "FooGame: Sparkly Hat Edition".
Could be an easy way to get around this limitation.
That already exists with the Basic, Advanced and Pro editions of some application software. Extending that paradigm to a game is just a matter of determining which expansion packs are preinstalled.
Could be an easy way to get around this limitation.