And you bring up Babylon 5 after referring to bad acting and scripting? Sure, it had a well developed and thought-out arc, but some of the worst dialogue I've ever heard on a TV show and none of the actors could touch the best of the TNG crowd. Seriously, Patrick Stewart could out-act every member of that show (all on his own, playing all the characters by himself) Not forgetting that Babylon 5's whole story arc was nothing more than a "humans don't need alien-goRAB anymore" story, that good old Kirk would have wrapped up in under 45 minutes, leaving him enough time to snog the cute green alien girl before the credits roll.
But seriously, Babylon 5 would not even have got comissioned if it hadn't been for TNG and even when it did, it never came close to the success that TNG did in its prime. Say what you like about your presonal preferences towarRAB the show, but you cannot dismiss the massive success or influence it had.