My two cents

[Kagamin]

On Monday, 23 October 2017 at 22:22:55 UTC, Adam Wilson wrote:
> Async/Await trades raw performance for an ability to handle a 
> truly massive number of simultaneous tasks.

Vibe achieves the same without trading performance. Then 
async/await only amounts to easy creation of tasks not even for 
their main usage scenario at a pretty high price of async/await 
feature, such tradeoff doesn't sound good to me.