I've just ordered a Sonos Playbase and Sub for the living room. I'll use my two spare Play 1's as surrounds. My TV passes 5.1 via optical so I won't lose out on 5.1. It means however that my two amps and gigantic Monitor Audio Gold 5.1 setup is going. I'll be sad to see them go, however they take up a lot of space, having 267 remotes is a pain in the arse and unfortunately my amps are not cut out to drive £7k speakers. While I may notice a diference, I don't think it's going to be massive as I simply don't use the setup anywhere near its potential. I've read a lot of people doing the same to downsize and have no regrets.
Setup would go from the following:
Sky Q
Nvidia shield
Amazon fire TV
PS4
Sonos Connect
5.1 amp
Hifi amp
OLED TV
To the following:
Sky Q
PS4
Apple TV
OLED TV
Sonos 5.1
Fewer remotes, fewer inputs to worry about and probably space for an XBOne. Oh, around £3.5k+ in my bank account. Oh, fewer cables too!