This is a good request and we are interested on supporting WSL2 for Windows.
The complication of this request is both logistics and implementation, I assume less change on driver itself.
We are actively working on the investigation to make the decision, I will keep you updated.
Based on the recent decisions, hardware video accelerator(quicksync) will not be supported by WSL2.
Let me know if you have any business justification on this, I can sent the feedback to dev team for consideration.