There's a `task {}` computation expression is the FSharpx.Extras library, which makes it much more pleasant to work with TPL libraries, and removes the performance issues associated with using Async.AwaitTask etc.
Yes. That one works pretty well, though it still lags a bit behind the efficient state machines that C# generates which can also help avoid a lot of allocations and indirection in deep task chains. One step at a time though, it'd be great to see F# get a refresh around the TPL (even though it had Async first, it'd be better to align with the platform in the long run).
