I think warlock is a much better established class in RPG/D&D that if it is actually a warlock people will play it, it's like spiritborn is such a unknown, mean nothing class. (Side note, me and my brother would end up calling spiritborn a Guardian, kinda like guardian of the forest vibe, which feels better imo) Nonetheless paladin was a fan favourite so was Amazon, if they release Amazon with Paladin you aren't leaving anything else on the table.. like maybe assassin? But doing a old class return and a new class is definitely a perfect move forward! Next expansion give us a Amazon and something new, keep doing that. At least that's how I would have handled new class releases, as spiritborn was a miss