Let's start discussing Apple's Combine framework by discussing what's missing

It’s a collection of small functions and properties without a linear story. ​ Part of me does not want to encourage people to use RxSwift for the reasons I’ve outlined. But part of me very much wants to encourage people to use RxSwift — because change comes, in part, from the community pushing the state of the art. ​ But if you do use it, and some time in the future there’s a nice, declarative way of handling events and dealing with state, then I’ll have you to thank for helping make that come true.