The fact that these cardss will draw from OS 1,2,3 is big for me. Flashback did too but also had later series in it.
that's really the only appeal for me - that it not only draws from series 1, 2, 3, but that it *is* 1, 2, 3. In their entirety.
Not just a handful of cards like the Flashbacks, or even a dozen or so like the '79 reprints.
This is the whole kit and caboodle!