Re: Earth based Trek show
Well I think it could work. Just imagine Deep Space Nine but instead of a space station we have Earth. We could have a restaurant where there would be meetings between characters, a command center and so on. Also, it could have some permanent space ships attached to the main base, so we could have space based adventures too, as when Defiant or a runabout left the station to go explore ... so I really don't see the problem story wise, it might even bring some new element to the series beside the classical Star Trek themes.
Kinda defeats the purpose of putting it on Earth to begin with: to keep costs down.
I'm not popular enough to be different! - Homer Simpson