Ok, let me be clear: Patching asyncio.create_task() to support this opt-in contextual task group binding is not an ultimate goal of this issue.  If it becomes possible to override/extend the task factory at runtime with any event loop implementation, then it's ok to implement this feature request as a 3rd-party library.  I also don't want to bloat the stdlib with version-specific branches, if there are alternative ways to achieve the same goal.  I just wanted to check out your opinons and potential alternative approaches to implement it.