Oh I agree, a tight focus is definitely better. So here's the theme:
Crossover Events
To use comic book publishing terms, each of you has a solo title that happens (mostly) off-screen. You have an origin, a rogue's gallery, a general section of the universe you deal with - say you're a Doctor Strange type who mostly handles mystic threats, or a Cyclops or Wolverine who fights for mutant rights, or a Captain Marvel or Nova who deals with galactic problems.
Whatever. We assume it happens, and you can reference it, and we can even make your origin, backstory, enemies, and associated nebbish cast part of character creation, but our game focuses on the big, company wide crossover events.
That's when you and the other PCs come together as a team to pool your talents against threats like Secret Wars, Infinite Crisis, World War Hulk, Blackest Night, etc.
This will give PCs more freedom to spend CP between adventures; just summarize what's happened in your story since the last Epic Crossover to justify new powers or an entirely new skillset or your fetching new cybernetic spine.