I think PP will not do that anytime soon.
For the user, this also means an increased risk that the data can remain on the server. (IP address of the client and ports used by a client must be made known to the server in advance).
therefore, for various reasons, PP will probably have exactly these fears and therefore prefer to give wireguard a wide berth at present. for the sake of the users' privacy.
For sure, this could be considered, in presenting that as an alpha release feature. But then, despite the precautions taken, there could some persistent logs, precisely because it would be an alpha version of a system that is originally designed to need persistent logs . And so some day a PP user could be deanonymised because of these logs. Very bad for the PP reputation, as people would not take into account the fact that deanonimisation would have taken place in the context of an experimental alpha feature usage. What people would take into account is that a PP user would have been identified because of a logging system set up by PP. All around the Vpn world, PP would be named "Unperfect Privacy", "Utrustworthy Privacy" etc.But you could implement it and simply describe it as eventually less secure on your website, vpn client etc.