I wrote something similar on a different thread, but here goes again.
The main problem with the infamous Award center is making it fairly balanced. What is the award center supposed to have? Only the very essential Items. Normal Pet fruits, Normal Rations, perhaps an apparel or two, HBs, Fairies?
Thing is, those items are highly accessible for most players, since they're very cheap and are regularly sold for cheaper than the normal price for Rum. Most people will want to buy items which are considered luxurious, be it Auto Ratz, Great pet fruits, Nanas or Hi-Amps, people will want those more than they'd want the items which should be in the award center, hence their price is lower.
Additionally, the Award center would have to be fairly balanced. There's pretty much two options here. Either the Award center is easy, and it leads to obtaining of those necessities at relative ease with little work, leading to oversupply. Or, the award center is appropriately difficult (Which is what it should be), but then isn't it just easier to farm money and buy those necessities since they're cheap? Rather than wasting time on leveling disciples?
Finding an even ground between an easy Award center and a hard one is a difficult task. If you ask me, I don't think we need it currently, the "necessary" items are very cheap and are very easy to find, while the luxurious items are appropriately more costly.
Perhaps we will need it eventually, but not right now in my opinion.