Hm, another alternative might be:
"Stances" are the short-term "win" prevents monks currently have
"Styles" implemented as more long-term buff decisions which affect the monk's fighting style (example, a monk in "Eastern Wind" style would have more effective vicious fists, a monk in "Drunken" style would be difficult to hit and deal random powerful blows, etc.)
However, "stances" would be restricted if a monk is currently in a specialized "style" - for example, "Mantis Stance" might be unusable in "Eastern Wind" style, "Dragon Stance" unusuable in Drunken, etc.
No real nerfs would be necessary in that case, just decisions which provide benefits at the cost of certain options
