|"Elminster? He's --|
busy at the moment."
I never really had those same issues with the setting or those characters, though it's likely due to the fact that I came to Faerun only after I'd gone through Champions.
Let me explain.
Champions: not everyone can be SupermanIt's rare for superheroic campaigns (especially the older point-based ones) to start at the Justice League level (and I'm talking Superman / Batman / Wonder Woman power levels). It's also rare for superheroic campaigns wherein the PCs are the only metahuman heroes in the world.
That means you tend to accept that there's at least one hero (or more) who are more powerful out there in the world (though you may out-shine them in your particular area of expertise).
Perhaps the things they're dealing with are far more earth-shattering than what you're working on. Or perhaps dealing with street thugs just isn't going to call the attention of Doctor Fate or Doctor Strange.
As for teams -- well, they can be in another country, on another planet, in another universe, or have been disbanded for one reason or another!
Champions: this is my city / turfIn comics, it's also common for a kind of recognized turf for heroes. Batman's city is Gotham, Superman's city is Metropolis. While they do operate on a worldwide basis, there's a precedent for the city's hero (or hero team) as being the primary defenders.
At the same time, look at all the Marvel Super-Heroes based in New York (who only encounter one another in brief cross-overs or as part of team books). Somehow, there's an accepted rationale that allows them to do their own thing without rubbing elbows all the time.
So, while there may be other heroes -- big-time heroes even -- they're not top dog in your neck of the woods, and in your area -- you matter.