I agree with the EV-reducing berries disappearing fast. So far I've only found one Japanese player with the berries, to which I sent a request; befriended. By the way, is there a limit to how many Dream Pals you can have?
Also, I really think the Share Shelf is a big waste. The only items you can swap for are the ones you don't have. So it's kind of a one-sided advantage on the visitor's side. I know I'm guilty of trading 1 of my 20+ Cheri Berries for the rarer items up on the shelf. There's nothing stopping me from giving a Forest berry for their Sky berry; no real point to putting up your EV reducing berries on the shelf unless you have an excess and want to get ripped off (haha berry scam), but whatever, I'll be grateful for the people that do put their EV berries up for swapping.