Sort of narrow arguments on Shatner's part... I'm assuming he was kidding around for the most part since, well, I don't know Shatner for being a real serious guy unless it's arguing with George Takei.
I love TNG, DS9, and JJ Abrams reboot. Didn't like TOS, but did like some of the TOS movies. Voyager I was sort of into, but never like TNG and DS9... Enterprise was just utter **** IMO. They should've instead focused on what works... Warin' and whorin', but never borin'. I'd have watched a post-dominion "military" style Trek dealing with the conflicts that arise, or a more involved "Borg War" Trek series... Basically more of TNG or DS9, and more Borging it up.
Can't say I agree with Shatner, regardless of his intent, that SW was derived from ST. I don't even see real influence there. I think Lucas was kind of beyond that stuff at that point in his life.
Also can't say I agree on the "humanity" argument, and that it was lacking in SW... It's there, it's less blunt since it's not necessary to cram it into a TV episode's time-frame for one storyline.
But hey, it's Shatner... And speaking of Shatner, I believe Betty White just Shat in her pants!