The competetive gaming is close to dead since a very long time, even before the release of SC2. I don't think this will ever change in the future, unless you use great piles of money to allure good players.
Getting good players back in another way doesn't seem very likley to me.
However, there are many new players, most don't try the ladder, but some do. And i agree from personal experience that they play almost always against "top" players in their first games. I haven't seen anyone of the guys i played against in their first match playing more games after that.
While it's maybe actually working against TrueSkill, i'd still like to see some kind of protection for new players. The current system would work with a lot of players, but with a small playerbase as FA, its imho more important not to demotivate new players then determine their skill in Trueskill as efficient as possible.