Yeah, that has to be my biggest problem with Rush. The level design was flat out stupid (despite the gameplay being fairly good). Sure, the original Sonic games had bottomless pits, but they were small and avoidable. Rush was filled with screen wide pits that spelled instant doom with Sonic's speed. Especially given that the inability for the Rush designers to even try to stick close to a single level terrain meant it was impossible to know if there was going to be a pit at the bottom of a jump, or if it was a three screen drop to the next ledge.