I've never been fond of these, and I sure hope we don't see any in RB 2. It's mostly because of the leaderboards. People that actually use the Strat easily have an advantage over people using other guitars (higher neck buttons), which makes it easier for them to get point, thus getting higher on the leaderboards.
And I'm not obsessed with my scores, it's just not fair. Simple as that.
It won't kill me if they keep Big Rock Endings in, but I will surely disappointed...anyone else?