Gasless transaction: yearn finance USDC vault migration

Yearn.Finance announced new USDC vault. If you have USDC in the old USDC vault, they will ask you to migrate

To migrate, you need to withdraw your USDC from the old vault and then deposit into the new one. This is very gas expensive

Wido lets people batch expensive transactions together and split gas. Launched recently in Beta.

Last week, 6 people migrated $323k with Wido. Each one of them saved 53% in gas 💥

Announcement https://twitter.com/joinwido/status/1466037617561063425?s=20

Disclosure: I work for Wido. We built it to let people save gas. Wido doesn't charge extra fees. We launched it with yearn but want to explore adding more protocols.

Which other gas expensive transactions should we batch to let people save on gas?