Assemble The Team OP?

I feel like I've always got to think and play doubly as carefully whenever somebody's using Assemble The Team, trying to pick out actors that only appeared once, as opposed to pretty much every other win condition.

And 5 movies to win considering there are 34 movies in the MCU seems ludicrously low.

At around my rank (1200-1300-ish) it seems borderline broken.