No chat/messaging kinda sucks.

[OvenproofPanda]

Just had an awesome best 2 out of 3 with a rando (I ended up losing) and I toasted them which I fine I guess but not having any way to message them outside of adding them on steam (If they even have steam and aren't on console) and let them know you had fun kinda blows.

I get it also prevents abuse but... it really takes away from any kind of community aspect :(