I mean i thought about having a description lock in the past where at least certain parts of your description like height, weight, eye colour and hair colour can't be changed at all, but I imagine it's not the most popular change.
A cooldown is an interesting suggestion, but I feel like the change doesn't matter
Commit mugging -> change description -> but now i'm on a 30 minute cooldown with a new description, still can't be identified.
OR you have it change but it takes ~15 minutes to apply the change? (a bit too weird imo)
Maybe something to address in the future.