I just ran across a minor bug today that lends itself to being exploited, so I figured I would bring it up.
When trying to get to the roof of the Sun-Temple and retrieve the memory up there, you have to leap up a waterless shaft, then from moving gear to moving gear out of the water until you can finial leap into a bubble that lets you swim up to the roof.
The trick is, when you are out of the water, and use the Nature Form to create those large plant things, they don't always behave properly. For one thing, when you grab onto them out of the water, you don't fall off after a few seconds like you do with everything else. But more importantly, when you leap off of one of the large plants, it will sometimes let you leap off with the velocity you would normally have underwater, and not the velocity you are supposed to have above water.
This means that with a single well placed plant, you can lunge right from the floor all the way to the bubble without ever having to touch a gear!!!
I found that this doesn't always work, but it seems to toggle with entering/exiting the water. IE, if it dose not work, you just have to drop back down into the water then jump out again, then it usially works again.