One thing that really had my attention and fell in love with Stadia is how originally Stadia was it's own platform and didn't have Crossplay. With that it really cut out running into cheaters in multiplayer games like you see now in games like pubg, destiny 2. I hope the platform gets more userbase so I can play online games without Crossplay.
I think crossplay is going to become more common, going forward.
I agree, but unfortunately the playerbase just isn't there. The wait times are extremely long even in the popular games. It also seems like the industry as a whole is moving to crossplay, since it's arguably more pro consumer.
I agree that I think crossplay will become more frequent in multiplayer titles moving forward. In fact, it was just confirmed that Crayta will feature crossplay between Stadia and PC.
Stadia needs crossplay at the moment in my opinion, as @Babaganuche7 said, the user base just is not there at the moment to avoid long wait times, etc.