Omg, I hate Brinstar and RC! I can't believe they're legal. IMHO I think a tourney match should showcase skill on a neutral, or "more fair" level. I'd rather know that I can beat my opponen with skill alone than have the reason they lost be directly related a terrible level. I just hate the thought of gimmicks. RC, for example, seems like the least realistic setting for a serious bout. Instead it becomes a game of who can survive the map. Just plain stupid. Certain characters perform pefectly well on most any maps, even RC, because they have safe options.
For example, while at SNES, I watched Lain (one of the best IC players in the world) fight M2K's MK on RC. In the maps previous he had held his own, this match decided the winner of the set. Lain was ravaged on this map, and unsurprisingly so. As if MK needs the added benefit of the map killing the enemy for him. For MK, he effortlessly traverses the stage while his opponent often stuggles with the obstacle course.
I just doesn't seem to me that winning on RC shows much of skill in comparison to a "fair" level.
Edit:
I'd definately peg LC as a CP. Seriously, those ledges make FD's look good. I get tappd under the edge so frequently in LC. It's so stupid.