As a Roblox developer, it is currently impossible to hide your past usernames on your profile. I feel as a user of Roblox that this should be a privacy feature embedded into the platform itself and would allow users to feel safe online with their current username representing their avatar entirely.
This feature wouldn’t improve development necessary but help secure and maintain the safety on Roblox for users who may have accidentally used their real name in the past or names they wish to no longer use. I have uses for both of those.
Here is a lounge thread of other developers who shared their excitement and support for this feature. I believe this would be a nice step forward to securing identity on Roblox.
Thank you for your consideration!