Alzrius
The EN World kitten
Even if they allow for freeform character creation, there's still going to be things you can't do. A given option in a point-buy system, for instance, might cost more points than you have available at 1st level (or even for several levels after that).Sorry, but there are very few RPGs that let you make anything you can imagine. Your choices are always limited by the designer’s imagination unless they put freeform character creation in the game. “But you can play anything you can imagine!” No, you have to pick one of the seven things Bob wrote down however many years ago.
"I should be able to immediately play the character concept I came up with (and it should be just as viable as any other concept)" is an expression of entitlement, not game design.