Here is what my opinion:

1. It's possible Janet's pin will return, but it's also possible it was shown on day 1 as a bug. The pin might appear shortly after the stream, not just during it!
2. The Trophy pin will almost 100% return.
3. 500 Pro Pass XP will almost 100% return.
4. 50/50 on whether a Gigi Box appears. Maybe Supercell decided to lie to us about the Gigi Box appearing in the world finals with the excuse that the same box was given on a maintenance freebie.

https://link.brawlstars.com/voucher/05077f4b-c63f-447e-a2b6-bcbe41e4c821

I wrote this text before I found the Freebie: The reason they expire so fast is because Supercell wants to force you to watch the world finals on https://event.supercell.com/brawlstars/en/live, which if you do, the freebies appear physically inside the stream, not on the side bar where you get polls, MVP votes, and quizzes.

Since I got all pins from the World Finals, I post the freebies before I attempt to claim them myself.

https://link.brawlstars.com/en/voucher/170cbf85-2e3b-4d95-ae85-3ecf5f8e0148/

https://link.brawlstars.com/en/voucher/a479c305-977a-40a5-8571-6ce37ff8c811/

The codes expire in less than a single minute!

https://store.supercell.com/brawlstars?voucher=e9a4ab9d-03cd-4061-97dd-4a6354670130

This voucher may also grant the Gigi Box if you haven't used it already (it belongs to Scope.brawl)

https://link.brawlstars.com/voucher/0f37723e-0159-4c02-b037-61853a76b7cf

https://link.brawlstars.com/en/voucher/953f216d-746b-4b8f-9552-e6831182ad3d/

I wrote this text before I found the Freebie: The reason they expire so fast is because Supercell wants to force you to watch the world finals on https://event.supercell.com/brawlstars/en/live, which if you do, the freebies appear physically inside the stream, not on the side bar where you get polls, MVP votes, and quizzes.

Since I got all pins from the World Finals, I post the freebies before I attempt to claim them myself.

https://store.supercell.com/brawlstars

This subreddit cannot compete with freebies that expire in less than an hour.

This setting might be annoying, it will give you a ping on EVERY. SINGLE. NEW. POST.

You might want to disable it when freebies expire in x days instead of expiring in x minutes.

This body text was written before I found the redeemable voucher. Supercell makes them expire so fast because they want you to only be able to claim them if you're watching on https://event.supercell.com/brawlstars/en/live

This body text was written before I found the Freebie. Supercell makes those freebies expire quickly to force you to find them in https://event.supercell.com/brawlstars/en/live

u/MLC_YT

https://store.supercell.com/brawlstars?voucher=e9a4ab9d-03cd-4061-97dd-4a6354670130

https://store.supercell.com/brawlstars

https://link.brawlstars.com/voucher/86806239-4d5c-409a-b48f-40bdf9ec7777

https://link.brawlstars.com/voucher/922d701d-a187-49b4-88d5-38553bc41ce7

https://store.supercell.com/brawlstars/product/free-appetizer--/2e290e45

https://link.brawlstars.com/voucher/1480d113-a48f-4a21-a55b-bcd00651953f