Most retractable cables are flat to cut down on bulk, so that along with the overall unreliability of the springs in some of them does tend to make them unreliable overall... But I feel like Anker would be the company to do it right.
They could come up with a cable retraction case whereby you put your own cable into it; that would be cool.
And Anker did tell me that they were planning to release the Type C version of the Powerline+ 2 line this year... But they only have a few months left, now.
Also, I doubt we'll get a Type C PD Fusion as long as PD power supplies remain this big.