Should not sign with All Elite Wrestling #3: The Usos have been treated well by WWE.

We've already stated that the Usos have been world tag team champions on the main roster six times, and they can probably look forward to more reigns than that if they stay with the company.
While tag teams such as The Ascension and the Authors of Pain, as well as the aforementioned Revival, have been somewhat lost in the shuffle of WWE's various brands, the Usos have by and large been almost continuously on television since their debut.
Part of this is due to their larger profile thanks to Total Divas, and perhaps it can also be explained by their familial relations with legends like their father Rikishi and Roman Reigns. For whatever reason, the Usos have been booked very generously all things considered, and there's no guarantee that they will receive such preferential treatment by a new company like AEW.