Apologies if this has been suggested/brought up before.
I wish that, within a single sale, I could assign different discount percentages to different titles, rather than a single slider that applies to all items within the sale. For example, I may want to put my older game on sale for 50% off, but only take 20% off my newer title. Right now, that requires creating two individual sale events with different items included in each one. It would be a lot tidier if we could just make a single "Summer Sale" event, for example, and then adjust the discounts on an item-by-item basis.