Quite simply I've played and enjoyed the game for almost a year now, but exculsively SP.  I don't usually get playing till 9-10 MT, so the following is based on my very small experience at that time slot on ICO:

Multiple times I have been, albeit nicely, asked to leave a game setup because I have 0 stats on my ICO account.  I completely understand if experienced players don't want a ton of inexperienced people in their games, but I present the defense that SP's aren't complete idiots.  Additionally, I have tried to make an effort to only join larger games; my thinking being that should I suck in MP I wouldn't drag down my only partner in 2v2 or what not (though I see now, I probably had a bigger chance of getting kicked in 5v5 games - who knew!).  Sadly, twice now there have been 4v4 or larger where the players are seriously just sitting around complaining that no one is joining the game to complete the teams and I have still been asked to leave.  It's a morale killer!   Additionally, if I have to read another post about how some MP 'genius' is going to set up teaching games so all the SP can get up to par, I'm going to puke.  While it certainly might be a great idea, coming off as the quintessential teacher on these boards is condescending and disheartening.  There has got to be a better way.

What is the solution?  Should game hosts make it clear MP 'newbies' are not welcome?  Should 'newbies' just host their own 'newbie' games?  Should, and I particularly like this one, the VERY SMALL MP community warm up to new SP converts and potentially loose a few games to help grow the damn community?!