Hey @bigfootjon — thanks for the continued work here. Good effort, over a long period! 
In line with my comment on the PR I’m currently a bit sceptical about extending async very much further into the contrib modules, due to the limited need/benefit, and the large amount of duplication we run into due to the function color problem.
It’s certainly more intimidating but ORM-native wrappers around async DB connections, and streaming queries, and so on strike me as something that’s going to yield much better returns. 