Tribes, or ‘minion types’, exist for a few reasons. Mechanically, they link a wide variety of disparate cards, so that they can be referred to and interacted with (“Whenever you summon a Beast…”, “If you played an Elemental last turn…”, etc.). They also help add flavor to a card. We have a variety of minion types right now, and are open to the idea of adding more in the future. However, each minion type we add does add a bit of complication, so we look at what the upside of each one is.
Take Treants for example: We’ve designed Treants to be consistently 2/2 tokens, with “Treant” in their name. So, if we add a Treant tribe, what do we gain? Treants are already quite recognizable, and searchable. It would allow us to print cards that are Treants, but not named “Treant”… but that would conflict with the goals of Treants to be 2/2 tokens, so we aren’t particularly inclined to do that right now.
Lackeys are similar; they keyword and consistent name already fill the role of the minion type, so an additional minion type there doesn’t really gain us much.
Undead is another minion type that we see brought up. What would a build-around theme for Undead look like? Is there a clear delineation between what counts as Undead or not? Since minions currently only have 1 type (apart from the special one-off amalgams), minion types tend to work best when they’re exclusive. Pirate is one where that gets complicated; in order to keep things clear, we tend to not make Murloc Pirates, or Beast Pirates, etc. Undead would be even more problematic in that regard; we’d basically have to go to a world of multiple types per minion, since dozens of cards look Undead along with an existing type already. It’s not out of the question, but we’d have to have a very good reason to cross that big bridge of complication.
Tri-class cards were pretty cool, yeah! I wonder if, in a world where the classes are divided between good and E.V.I.L., there would be a place for multi-class cards in the future? Hmmmmm… It’s definitely something we’d consider!
Mana ramp is indeed part of the core identity of Druids in Hearthstone, and we do intend to maintain that going forward. While they may not currently be as extreme at that as they once were, that leaves us room to add more/stronger mana ramp cards in the future. I think it’s safe to say that you’ll see mana ramp cards in Druid again.
A few reasons! First, we generally try to sprinkle some flavorful cards into each set. It helps set the tone of the set, helps it feel like you’re in Dalaran. Second, mechanically, it helps lay the groundwork for future build-arounds. As mentioned above, minion types are important for mechanical interactions, and we recognized that numerous Elementals were rotating out of Standard at this time, so we could use some replacements. Just as Dire Mole saw play merely for being a 1/3 Beast (heck, even sometimes just a 1/3), there’s potential for a 2/3 Elemental to see play, with the right supporting cards.