You are not the only one, my friend. All the people that I know + me included, are really really disappointed seeing some of the changes and ideas. We are still playing, but only from time to time. Blizzard is totally ok with that. Not so long ago they've said that they want players to play new expansions, but they are free to play other games too. The same goes with HS - as long as You are coming back to check out the new content, it's fine.
I think that GWENT, Elder Scrolls Legends, Duelyst, Faeria, Chronicle: Runescape Legends are all getting more and more popular and it's a good thing
Great card games.