I've been working in the async space for a few years now and it may just be survivor bias, but while I think there are definitely some issues, I'm still largely

I've been working in the async space for a few years now and it may just be survivor bias, but while I think there are definitely some issues, I'm still largely happy with it. It's still evolving after all. If they can get the cancellation issues sorted and async in traits that would be a good place. What were your issues with the C FFI? That usually gets praise from people.