Cheating would really be a problem since they are using third-party on this to connect to the games. We all know that in games there are a lot of cheaters so probably it would be prone to cheating and this is difficult to prevent as most of the game developers are trying to counter this but still, cheaters still exist. Though if most of the PVP games like tekken or mortal combat, cheating is difficult and also easily noticed so it would be nice to be integrated it soon.
I am sure that when one casino will roll out this a lot of casinos will follow since if there are new trends others will follow so that they can join the trend and attract customers which are also we as a gambler is happy about it since we can choose what is the best casino to play and reputable one. Though for now, I haven't heard of this kind of game rolling out (or I just didn't notice it) so the possibility on this is it will take a few years or more to see this.