I kind of believe with OP, i have been thinking and especially on FT i believe the game is more likely to be filled with fairly tight, semi solid players at the low levels. i believe part of this is because the amount of freerolls
fulltilt have, to win a freeroll requires a reasonable amount of skill, or an amazing amount of luck, (a decent player needs quite alot of luck still to win a freeroll) many of these freeroll players are going to be either very slow losers, very slow winners or break even players, mainly due to the rake, so these are the players who are going to be playing the micro stakes a lot.
another thing to consider is at the low stakes the players are either quite poor, meaning they are more likely to be quite tight with their money, or they are trying to seriously learn poker, serious learners are much better players than experienced fish (or from my experience)
are people who get home from work and just want a quick game after dinner or w/e, or playing on the piss or hangover or w/e the circumstance, most of these people are going to play with 10$+ mainly because 1 dollar or so means nothing to them.
so although i believe that the regs at higher levels will be better, i believe that there are a higher amount of fish which make the games different, but not much harder than each other.