Yeah, the David and Mary Margaret storyline sort of...swerves into something I didn't expect shortly after this - but it was also something that I didn't really like until it ended and wasn't half as awful as I expected. TL;DR I'll be interested to see you reflecting on the season at the end since so far your opinions have basically mirrored mine. Ultimately, I ended up feeling more satisfied by the end of S1 that there was a useful dramatic point to be made with David's total uselessness and Mary Margaret's eventual response to it, and whether or not TWU WUV really does conquer all, but I wish they hadn't taken so bloody long and irritating a path to get there; the payoff isn't big enough to make me forgive what came before (unlike S2 Regina...)