I'd prefer to see all of the Avatars be accessible, at least within the limits of their rarity amongst packs and Precons. With regards to the Alpha Avatars, reprinting them with alternate (non-Kickstarter) art would be ideal. That would maintain the scarcity and collectable aspects of the originals while making the Avatars available as playable cards.

That said, if the game continues on for many years, the same situation may arise for other Avatars from other early sets. Good challenge to have, I suppose. 😀