Is a team up hero worth saving for or should I go for characters I like first and a team up secondly as a "just because."
Debating randoming or just saving for Ms. Marvel atm. My roster is a total sausage fest.
It's nice to have one. They aren't that important (by design I suppose since not everyone will have one), but I like to think of them as an extra signature power. Maybe you should go for Ms. Marvel first since your roster is, um, infested with sausages, then get one of the cheaper team ups of your choice afterwards.