I think you're overestimating the skill difference in 5/10 as opposed to 2/4. Granted, I haven't played 2/4 in a while, but I play 5/10 regularly. I can tell you that the 5/10 game on party isn't really hard. There are still a good number of live ones out there. Maybe not as many as 2/4, but certainly enough to find plenty of good games.