When I say "I'd like some more exploration" that doesn't mean I want an hour of gaseous anomalies, that means "I want some space battles in a place that isn't Earth or the solar system".
Really it just means, I'm sick of Earth.
To be fair, though, a battle set in Earth orbit is more exciting than, say, Veridian III. Sure, the fate of Veridian III is exciting to us (or not), but the average moviegoer doesn't give two fucks about the fate of the denizens of Omicron Theta Omega Epsilon Phi Alpha XVIII.
Why does the movie have to be about the fate of x planet? Into Darkness wasn't about that, Harrison/Khan never said he'd wipe out Earth, he just wanted to save his crew and kill starfleet people because reasons. It took place at Earth though, but in reality the finale of Into Darkness could have happened in the orbit of Kronos and the movie would have probably had a bigger impact in the actions of Kirk sacrificing himself to save the Klingons and his crew. Anyway, I'm digressing.
Using Earth is cheap. It's our collective home, of course the audience cares about it. The mark of a good story would be that the audience does care for Omicron Persei 8 or whatever because the story is good enough to affect them on an emotional level. I sure as shit cared for Xandar in GotG, and I cared about Yavin IV in Star Wars. Likewise, Middle-Earth isn't a real place, but the LOTR trilogy is one of the most engaging cinematic works of all time - the audience cares about that world.
Now, all of these examples aren't what Trek should try and be or do - but they are varied examples of fake fantasy worlds that engaged audiences, and between all of these theres a spot for Trek.