Most desktop users (in my personal opinion) couldn't give a rat's ass about controlling the volume of individual apps or doing remote streaming. I can do both on this system and I have used them (on this system) precisely...never. It's just not even a big deal.
We now seem to be headed done some "let's all become Macs" road in which configuration is removed to benefit perceived needs of desktop users (mixer settings going away in rewrites when a simple "advanced mode" toggle would have sufficed) who aren't going to use the per-app. volume settings anyway.
I don't hate PA, I just find it gets in my way. Every time I upgrade my desktop or laptop, something audio breaks or changes behavior in an undesirable fashion.