The point isn't what I "can" create, but the mutually exclusive choices I'm forced to make.
If I can dress up everyone with the heaviest armor class in the game, with no downside whatsoever, and the only reason to wear lighter armor is self-imposed flavor, for instance, the system is probably crap.
Same if I can maximize both melee prowess and magical power with no compromise of any kind.
Now I am confused, given the freedom to play exactly how you want to play you would choose to play in a way you don't enjoy?
Also the best classless systems force you to make choices, if you increase your durability it comes at a cost of locking you out of a high end ability that you would only have access to had you specialized.