It was very good to finally have Infernal central, but why don’t we have Flame Rift? Just replace Unstable Rifts or for Flame Rift. I am glad the new Avatar is nerfed right now, since it was a nerf to Destruction to lose Blasphemy, I did not want to play that ugly Overfiend so that’s good. But I feel like Flame Rift is lacking.
About Hero Talents, I think that Hellcaller should be better than it is, Diabolist is just much better than Hellcaller because of the many Chaos Bolt buffs (even though Chaos Bolt is not hitting that much atm). Destruction is already not well represented in Hero Talents, at least don’t make it mandatory to play Diabolist (by the way reduce the Pit Lord size for the caster).
Nevertheless, I like the current Destruction tree, but Flame Rift would make it perfect. And perhaps removing the Overfiend and adding Blasphemy back. Remove Blasphemy’s stun and the problem is already solved.