Lame. I couldn't have cared less what the alternate versions of the crew were up to. They're not the crew I'd been watching for four years and they didn't engage me one bit. I know others here feel differently, but that's my take.
I wish they'd spent that TOS bridge money on William Shatner and done the MU origin story instead. Or a "Tomorrow's Enterprise" time travel episode. Or at the very least, done a "Mirror, Mirror" premake where the at least one of the "real" characters is involved.