Well I think you are wrong if think that NO players at 2nl/5nl are observant. While there aren't good players per se, because if they are they wouldn't be playing there, there are players with good habits and a nice foundation that just haven't the BR yet to move up. And while there probably aren't as many "regs" at micros as other limits, there are some. And my guess is not many of them are heavily multitabling so there is a chance they pick up on it and it will hurt you later. I'm not totally against the play at micros, but more micro players are passive so alot of times you will get a multiway hand doing this, and if you can't fold AA postflop when the situation no longer looks good then you are in for some heartache.