Yeah I'd like Waze too.
From what I can tell of CarPlay/Android Auto one of the major things is being able to have messages, etc read out to you, and to be able to respond. I must be in a minority I think in that when I'm driving I'm driving... if it's important enough people can call me, but if it's messages asking what I thought about the last episode of some TV show or something, I can probably live without it until I get to my destination.
I don't do an awful lot of miles though so maybe for motorway junkies it's a much bigger deal.