Thanks for hosting this event! I ended up missing the signup deadline, but I participated in noms and treats and I hope to actually do the exchange the next time around. With that grain of salt, these are my thoughts:

• No preference on when the next round happens.
• I think it makes more sense to give it a few more rounds on "Any" for people to get used to the difference. Being able to request Any is really useful when the fandom has a large tagset but you want to include all the characters.
• I don't care much for worldbuilding, but I would like it if there a non-character-based option.
• I'm not a fan of anon periods, so I thought 48 hours was alright, maybe even on the long side. But since I didn't actually receive anything to read through and comment on, I think people who had several gifts would probably be the most relevant voice.