However, one of the abilities that Zenyatta is famous for, but is not in the Tradition, is his natural ability to hover everywhere he goes at a fixed height. In the game (for some reason) he can still get stuck in things like bear-traps, despite not walking, and the only really mechanical effect this has is that you can't hear his footsteps.
My player really wants to be able to hover like this for narrative and role-play purposes, but I imagine it will be a severely broken mechanic if I allowed it without alterations. So my question is, what alteration can I have so that perpetually hovering isn't as broken as it sounds? And what safeguards should I have in place to make sure that the ability don't get abused or used too heavily outside of narrative and role-play?
The character is a level 3 wood elf monk, no multi-class yet (if that helps).