People such as Figura and Bertazi have been attempting to do what you propose for most of a decade now[1]. They've ended up with this, after two previous implementations running in Wine for many years. Thier reasons are explained in their documentation[2]. Perhaps you know better. We all look forward to your work.

[1] https://lkml.org/lkml/2019/7/30/1399 [2] https://docs.kernel.org/userspace-api/ntsync.html