It is harder for low-skill players to get the ball rolling in Eruption, leading to fewer Hunts. I don't want to invalidate the experience of players at a higher skill level, who are able to go on 15-25 streak tears. The lack of an objective makes Iron Banner bland in my opinion, but I am an objective player at heart so that could just be me. I think Rift and Control were great because they emphasized team coordination a bit more.
As a side note, I'd like to see the return of Iron Banner: Supremacy at some point as well, which was last seen during Destiny 1's Rise of Iron expansion if I remember correctly.
Final idea: Combine Supremacy and Eruption, triggering the Surging and Primed buffs from collecting Crests.