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Continuing off...
Yeah, lack of laugh track is good, but have you ever seen a multi-cam style sitcom (aka stuff like Seinfeld, Friends, Boy Meets World) without one? It's weird. It actually screws with the flow. The set-up actually kind of calls for it. It's only single-camera sitcoms (aka stuff like The Office, New Girl, Community) that works without them, in my opinion.
As for the greaser guy who thinks he's Harley Keiner, my guess with him is he was an important character in the first one. If Tanner was the Romeo, and Lela was the Juliet, he was probably the Tybalt. Only because he's a Disney Channel antagonist, probably they all became friends at the end. So, because he (and the rest of them) don't fit into into this new storyline, they're struggling to give him something to do, even though there's no reason for him anymore. Not sure if you're familiar, but I'm going to call him Yamcha.
Sorry, buddy, I just can't get into Lela the way you can, math or no. Character's cool, actress is good, and she's pretty, but my feelings for her are strictly platonic. Mac's more my type. Or maybe that other biker chick who doesn't talk as much.