Preventing people from creating alts is probably the dumbest idea I've ever read on this forum. Charging extra letting you play with a different group of friends was a pretty dick move in FF11, and I was apalled when I saw FF14 raising this extra cost to three times more than it was in 11. I was thoroughly pleased to see the planned subscription models for 2.0.

It will no doubt encourage me to play level more characters on the same world, and also on additional worlds to play with a bigger array of friends. This will most likely keep me playing FF14 for a longer time than if I just got one character included in the subscription fee. And as said earlier, it doesnt' lead to server overpopulation because you can still only be logged in to one character at a time per account.