New play mode sounds awful and will lead to fewer deck possibilities and a more stale meta game. Decks that have been borderline viable but are just missing a few cards will now not come to fruition (control hunter, beast druid etc.). Bliz should have introduced a catch up mechanic so new players can get the older cards and combine this with innovative cards that shake up the meta such as Reno. I hope the new play mode fails and everyone keeps playing 'wild mode'.
New play mode sounds awful and will lead to fewer deck possibilities and a more stale meta game.
People who have never played other CCGs are underestimating how important formats like this are for these games to be successful in the long term. MtG would have died long ago if it wasn't for the introduction of the same Standard format that HS is now mirroring.
OK thank you for the answers. Feels a bit naff that the solo content wouldn't still be playable (I.e. that has no effect on playing others) but I guess the expansions are about the guaranteed cards as mentioned.