I didn't mind Black 2, but Black nearly put me off the franchise. Training was a chore, early route Pokemon selection was truly awful, and the random encounter rate was ridiculously broken...amongst other things that made it unbelievably tedious to slog through. It broke the mold alright, but I wouldn't say that was a positive thing in this case. I've always enjoyed Pokemon games, but I can't honestly think of anything positive to say about Black. Black 2, sure, but not Black. It wasn't so much the softcore reboot aspect that offended me as it was the lack of effort that seemed to have gone into it.
I don't see why people get so excited about the plot, either. It was no darker or deeper than Platinum's, and I didn't see anything particularly special about it...but then, this is probably the expectations thing coming into play again. I'd been told by a lot of people before I got Black that it had a "proper" story in it, so naturally I played it expecting a proper story, not the same old thing just in a slightly different order to make it look fresh and exciting, which it most definitely was not. I've tried to see it, but I just...don't see it.
When I said "BW" earlier I was referring to Best Wishes specifically though, even if I didn't like the original fifth gen games either. I don't dislike the fifth generation as a whole - Black 2 more than made up for Black's numerous flaws and shortcomings - but it had a very rocky, unfortunate, and downright lazy start, in my opinion. But I guess I'm in the minority here...as usual. xD