I just found out that the new donation interface won't let me donate more than 9,999 items at a time. It's probably not very common for people to want to go over that limit, but it does happen, and it would be nice if we could donate at least five digits worth of items (99,999).
Example: My donation limit with one of the giants right now means that to get maximum use from EHSP, I should donate 10,966 meats at a time, but I can't do that right now.