Yes, it's good to hear something "throwback" on the radio nowadays, with garage-esque tone, but it's been happening since 1979. It just hasn't been on the radio.
Jack White's lyrics are alright, but I know tons of folks writing some good lyrics these days. Meg White sucks. Period. There's nothing you can say to change that. As far as gimmick duos goes, I can't think of a better or more cheesey one right now. But feel free to help me out!
Thats the point with them: they're a gimmick. If she was a better drummer it would take away from Jack's personality, or the songs? That's a statement I really think is kinda dumb. Their whole thing is a gimmick. "I'm a good singer/songwriter/guitar player, but if we want to make it, we need a gimmick... hmmm, good thing you have nice breasts... you'll play drums!"