Nothing wrong with breaking with tradition if there is some form of improvement.
Breaking with tradition just because you can is to me more about ego and spits in the face of those that have gone before.
I'll continue to dress as my instructor dresses, and I'll expect my students to follow 'suit'. (clever little pun there
If someone down the road wants to dress up as a clown then that is how I'll percieve them.
In this instance - not much else you can do, Their dojo - their rules.