I did some research on it and all the things I read was its not wise to do. Especially if you are in this grind for the long haul and wish to monetize. I guess for games that are already out you can show off original gameplay but professionally created trailers that may be copyrighted could be a strike on your channel. I was hoping to find a length of time you could run it before it would get picked up. For example, I'm told music reaction videos try to keep clips under 30 seconds so it doesn't get picked up. Play 30secs, pause, discuss, continue to play another 30 seconds.
Well there goes that next vid idea.