This question is about something I expected to have been asked before, but I could not find anything, neither on physics.SE nor on general meta. Apologies if I have missed something. I started thinking about the topic after reading the recent question How to Help the Physics.SE grow (member-wise)? Qualitatively as well as Quantitatively , which is concerned with the loss of professional users.
I would like to know if one can extract a "professional account" from a currently existing one. That is, I would (potentially) like to create a new account that contains a selected high-quality subset of my contributions here, without the two accounts being visibly associated. I am interested both in whether this is a supported feature (e.g. by asking the moderators to arrange it) and whether it is something one should do/something the community supports.
Background: I started using physics.SE relatively early in my undergraduate and have now progressed to practicing physics at a more "professional" level (not quite there yet, but getting there). Initially, I mainly participated for fun, asked a lot of questions about things I did not understand and answered where I felt I could contribute. While I would not delete any of my answers or questions, the quality of many of my contributions is not on the level that I would want to be associated with my professional activity. In addition, I have participated in other Stackexchange sites, such as rpg.SE, which I would certainly not want to appear, for example, on a CV (related question on that topic: Is Physics SE on your CV?).
Is this something anyone else has been thinking about or do only I have this problem? Should I just start a new account from scratch? Should I go through all my old contributions in a review fashion? Or is the extraction of contributions into a professional account someting feasible/wanted? If it is not something currently supported, should it be a feature?