Much of the early run of Birds of Prey was Proactive Superheroes Done Right. Around half their missions involved going after slave traders or drug czars or political prisoners or whatever; sometimes to defuse a situation before it happened, almost always to deal with a problem that would never even have crossed the cape radar if Babs hadn't gone looking for it. (A lot of the time this resulted in Dinah getting kidnapped, at which point of course things inevitably take a reactive sort of turn, but nobody's perfect.)
That's arguably not that different from stopping Grundy from tearing up downtown Metropolis, since in both cases you're basically stopping a crime in progress, but it's certainly a notable step up from "badguys target Titans, Titans defend themselves, this has become a completely meaningless contest of Red vs Blue and no one is actually protecting anyone from anything or saving any lives beyond their own," sort of thing, which is so ubiquitous and annoying across the comic landscape that you can see why the whole "this team will be PROACTIVE!" concept keeps resurfacing regardless of how many times it's sunk disastrously before.