I generally prefer open systems where your skills, abilities and play style determine your 'class'. Thus, the restriction of 1e and 2e weighed heavily on my creativity... man. 3e/3.5e and PF were a major step forward, with 5e an evolution of this. D&D is still built around a restrictive set of abilities and powers, but the more open multi-classing rules make it easier to design the character I am picturing in my head.
We won't talk about 4E here.
Or anywhere else. It is not right to mock the dead.
