No more Guardians, Black Panthers, Thor’s, etc?

You get a new card and start over.

Probably no more of the original Avengers in films, with a few exceptions though. The story arc for the OG Avengers is over.
This movie was the satisfactory completion of a fairly cohesive serialized story - very much like a coordinated series of several comic book titles that are following a single story line over a year and a half run.
I was very happy to see that pretty much all the various Marvel movie directors handled their characters within the overall story. It was pretty obvious that the characters were true to their own personalities from their most recent movie franchises even as their actions were written to help this movie work.

Haele