But how we summon Varshan? We need to craft an invoker
If he doesn't drop hearts (since season 1 would be over) why would anyone bother to kill him? He isn't a challenge like Uber Lilith. The Malagnant Tunnels that you use to get to him, are 5 levels below you once your 80+, so no good for XP. Maybe they are keeping him for MIDgame content, but certainly not endgame.Unless they rework him, or allow hearts to continue to be a thing in the Eternal realm, I just don't see the point other than letting Blizzard say they added content (even if no one bothers to use that content).
It's good that he's staying since that's another boss everyone can farm. I see no point in spending days or weeks creating a boss then shelf it because the season is done.