Hmm... Well... I forgot how far you can go in terms of changing things (since I was banned from psn quite a while ago) but the way I would do is how Steam does it! You have a Display name and then you have a username. You use your username to login which is attached to your account and then use ur display name for public viewing/games which you can change anytime with anything. So, if you do something ban worthy, the people can just report your account and it doesn't matter what your Display name is cause ur account is the one that will get reported. So I mean, why not just do it that way? (If it hasn't already been implemented that is)
PC Specs: CPU: 7800X3D || GPU: Strix 4090 || RAM: 32GB DDR5 6000 || Main SSD: WD 2TB SN850







