Actually, I just got an idea for a sidequest in Lt. Surge's City (I keep forgetting the name.) Basically, it involves that guy that's constructing a new building in the city. Basically, there are a series of fighting pokemon that are refusing to help build the building until they can get some gourmet berries out of it. There would be five different pokemon who want increasingly high rarity in berries. And once all of them have gotten their meal, they would all start working on it again. Now, as for the reward, it would be a delayed one. Basically, if you complete this quest before beating the champion, when you come back afterwords, a gourmet berry shop would be there. Complete it afterwords, and even though the shop would be there, it wouldn't contain the best berries. I don't know how long it would take, but it seems like a pretty good idea, eh?