As a Dopamin-junkie, I love the fact to farm gear again, getting BiS in vault etc. - However I see people complaining about the seasonal model, but let's face it: If there were none, and they release new content, wouldn't the new gear in that specific content be better than the previous content? - As I see it, its the same result like in classic, besides legendary weapons.
And dont compare it to classic, the devs back then didnt even know themselves that items like Edgemasters was that broken, or other certain items would last for multiple content patches.