Resolves YES if Captain America: Brave New World, or its credits scene(s), depict an Avengers team consisting of at least three members. Resolves NO otherwise.
There may be some ambiguity as to whether a team would be considered "Avengers" if the name is not explicitly used; I'll use my best judgement but may have to resolve N/A.
The Thunderbolts* situation, as well as the Kamala and Kate situation, complicate things a little here.
I don't intend to consider a Thunderbolts or Young Avengers team to be "the Avengers", even if their name has "Avengers" in the title. The distinction is somewhat ambiguous, but it's essentially about whether it's the main Avengers team or just a side team. (In the same way that I probably wouldn't count the West Coast Avengers either.)
That being said, I could imagine some even fuzzier cases - for example, if Sam Wilson himself were to become the leader of a "New Avengers" team consisting of Kate Bishop, Kamala Khan, and Cassie Lang, I would have no idea what to do.
In cases where I'm not sure what to do, my guiding principle will basically be - do I expect this team to be the main stars of Avengers: Doomsday?
Do "Dark Avengers" teaming up count as an Avengers team up?