How about DS9 created and written by JW? First off, Sisko would never have come to terms with his dead wife in the pilot - he would have brooded in his quarters about her a lot. Odo and Kira would still have fallen in love, but after they made love, Odo would have turned Founder on her and killed half the station while torturing her emotionally. Kira would be more like 19, twice as hot, and always kick a bunch of butt. Bashir would have gotten together with Dax, but she'd have cheated on him and turned into a lesbian. Mrs. O'Brien would be out; instead, Quark would be the mean-spirited principal of the station's school. The wormhole would not be called the Celestial Temple; it would be called the HeavenMouth. The Dominion war would have spanned seasons 2-5, would have featured 10 times as much emotional turmoil, and the Federation would have fallen in season 5. After Sisko had to abandon the station, they'd have been stuck on either a freighter or a busted up Defiant, and they'd spend the rest of the series avoiding the Dominion and working scrappy little capers. Nobody would ever be happy. Garak would be exactly the same.