The primary reason why I personally am not a huge fan of the “add a second stack, and rebuild components” approach is that we’d just be re-building what we already have, even thoough we know that there are a lot of papercuts we could fix.
A clean-slate approach would allow us the opportunity to do so, without constantly changing small things over a long period of time, potentially annoying users. However, since there’s a clear lack of resources on this topic, maybe you’re right, and running dual-stack and porting the existing UI would be a first step.
Good to see your name. Take care. 