I could see a non-shade version being an optional end-game uber strength boss. They could make a chance for the shade of Oboryss to spawn a portal to Oboryss himself. Would be kinda like PoE’s Abyss thing.
I will point out that Shaper/Elder in PoE is 1% or less. Most players don’t even get to red maps. Non-casual players severely underestimate the number of casual players.