What i would find interesting if the Hearthstone development team considered to unnerf some of the cards which got nerfed in the early stages of hearthstone (pre naxx) like Argent Commander, Novice Engineer, etc. The point behind this is, that after the changes new expansions with stronger minions came out (sludge belcher, piloted shredder, etc.) which make the cards nerfed prior to that even less competitive. i think the change of environment for the cards really prove the point that at least the very early nerfed cards which dont see constructed play now at all might be able to get some love again.