Not sure if I want this as a cheat or as new default behaviour, but I always found it a bit strange that characters other than Mario and SOPHIA III would be given the default high-and-slow jump underwater a la the Mega Man games. I think it makes more sense that these characters would have the ability to do smaller but continuous jumps while underwater for the following reasons: It better simulates the swimming aspect of being underwater. The slow high jump feels more like being in a place of low gravity like the Moon. It means that these characters can actually "swim" to avoid enemies and underwater pits. For example, it doesn't make sense to me that a mistimed jump underwater means your character can be doomed from an underwater pit. It avoids having to make any modifications to the originally designed water levels (e.g. adding extra platforms) which avoids work and results in a more source-accurate level.