Zul'jin got a lot of people excited and so many will craft it, if they don't open it in the pack. In fact, many might craft more Spell Hunter cards, if they are missing them. And I'm not saying the deck isn't fun to play or that it's not competitive. The thing is though the deck will be dead for all intents and purposes very shortly, i.e. as soon as we enter the next rotation. And then they will need to switch to a different deck and spend dust on crafting that. Blizzard's business acumen is top notch.
Sadly you're right. And the real worry is, if Hunter ends up god tier for this meta, Blizzard will use the impending rotation as a reason not to generate a balance patch and we'll have to deal with months of an oppressive deck.
You don't know that. Maybe next expansion, hunter will get new spell-heavy cards. Maybe there won't be a no minion hunter, but there might be cards that reward playing spells, similar to what priest and paladin got now. You also only really need some summoning spells, like a new version of to my side and a new spellstone OR many damaging spells like arcane shot, flanking strike and kill command.
There's really no way to nerf Zul'jin, so I'm certain they won't touch it even if it's found to be unbalanced. That said, having played with him, I wouldn't say he is. It's a strong card, but it's certainly not enough to put Hunter in god tier.
We can dust the set after it goes to wild,also if we play daily we can get 40-60 gold+55 gold quest(average),and you can make 1 pack a day with ease,3 months until next xpac=> 90x100=9k gold,if you buy the small pre-purchase you get 107 packs+6 at release(and maybe 1 extra more for some event like we had this xpac) and you get 114 packs. After you disenchant the garbage cards+ golden ones you have everything.Blizzard business model is free=wait and have patience months and months and not free=get all you want in 1 2 days.I have a good collection and spend very very little."Patience is the greatest virtue!".
Rexxar is long-term value. Big beast after big beast. Kind of the only thing which will let a hunter win a game against an Odd Warrior. But it's kind of slow. Other than the 2-damage sweep, Zombeasts are slow. It's great if you want to grind someone out, but it doesn't do a lot to win a game when you're behind on board. Sometimes you'll get god-discovers, and can come back, but it's about having more gas, rather than getting tempo.
Zul'jin is a one-time large board. Like Gul'dan, but with a worse hero power attached. Two damage to any target is nice, but not amazing. There are certain classes this is strong against, and others which it isn't. A massive board that probably crushes any deck which doesn't have a board clear. ZJ is GG. Against a deck with board clears? It's not super impressive. The board can be dealt with in a single Brawl or Twisting Nether (lol, no one runs Twisting Nether), and the secrets aren't too big a deal. Against a control deck, the scariest part is the Deadly Shot and maybe Crushing Walls. Either way, it's big tempo, but not huge value.
anyway zuljin will become even better when rexxar rotates out regardless if spell hunter is still a thing or not.
and saying spell hunter will go away is a complete guess at this point. is it losing a lot of support? of course. will it get as much as its losing back in the next expansion? probably not. but to say the deck will just fade out of existence without know anything about the next expansion or the meta that follows is complete conjecture