The drawing system was reolutionary, but way to easy to exploit. Having 9999 HP before leaving garden was doable in six hours. The drawing system was and is excellent because it further separates each of the games as they should have been. They share the same universe, but nothing more. Saying one game or one movie isn't a true final fantasy 'thing' because it was too different ignores the fact that they are noncanon. Honestly though, materia was the stupidest of all magic systems.