The Way of the Four Elements monastic tradition is widely considered to be underpowered and unappealing. I analyzed this subclass and looked at the ways others tried to fix it (here is one example) in order to come up with my version of an update. This is what I came up with.
The core of the problem, in my opinion, lies in the fact that the only bonus this subclass gives to a monk is the ability to cast a limited number of spells using the same resource that powers their other abilities. This is very problematic because they are given a choice: use regular monk abilities, or use the Elemental Disciplines, as a monk does not have enough ki points for both, especially at lower levels.