Unlimited Guesting
I don’t know why they have it restricted to 2 guesting worlds per 24 hours either. It’s not like it gives people some advantage to guest more than 2.
If that were the case, the only reason to ever buy a server transfer would be WvW. Not good for their economy.
I’ve never needed to guest on more than once a day, unless I’m going for world bosses.
Truth be told, the cost to permanently switch servers is exorbitant, but I see both sides of the issue to some extent. However, since there is no benefit to any world by playing PvE, if you’re not going to create unlimited guesting for PvE, at least raise the cap.