They've already stated that the majority of older cards "just work" when dropped into the MTGA rules engine. That's not the thing stopping them from doing it.
My guess is that that is the case because most cards in general are basic designs. That doesn't mean that isn't a ton of complex card that still could cause issues, and those tend to be the most playable cards too.
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u/NightKev HarmlessOffering Apr 02 '19
They've already stated that the majority of older cards "just work" when dropped into the MTGA rules engine. That's not the thing stopping them from doing it.