Double candy

Probably Halloween. They've done it the past 2 years, at this point I think they know people are expecting it. I hope double transfer candy comes back, as much as I'd like to just trade away my extra legendaries I'll go dust broke with how many I've got, even with the past week of extra dust behind us.

Depends on your storage space. If you can save your tradeables without any trouble, might as well. If it makes your daily gameplay a complete agony, probably not worth it.

Agree that it'll probably be Halloween again, it fits thematically and people expect it.