It's awesome
In my experience, it's exceedingly rare that H4 places me in a game that's already meaningfully underway (1 in 20 games, tops). Being placed on a losing team very, very rarely is a small price to pay for never having to suffer through an entire game when the rest of your team quit on you. Rampant quitting was making Reach nearly unplayable, especially during its second year, and I'm thrilled that H4 all but fixes that problem completely.