You can queue with people you already know, and some games do have a 'stay as a team in the next queue' option, but there's no real opportunity to actually get

You can queue with people you already know, and some games do have a 'stay as a team in the next queue' option, but there's no real opportunity to actually get familiar with anyone, let alone a community, and play with them more in the same way that you get with community servers