> It seems like having a whole framework/ecosystem for loop lifecycle management, async libs, state/comm, etc will unfortunately be needed.

... twisted has been around for ages for exactly this reason as a 'framework' unfortunately this means it's not 100% ported to python3 yet, but I suspect (not a dev, etc) that as twisted becomes more mature and 2.x dies off, there might be more overlap between these two things.. and perhaps other similar projects