I had a thought that I imagine has reasons against it but I can't articulate them, so I thought I'd share.
What if Seasonal became the mining map? The only downside I can see is that it would probably have to be Normal mode, but do that many people here play Hard mode for fighting difficult mobs anyway? (I don't know.) The increased difficulty of Seasonal/Mining could come from the fact that it has fewer/no perks. And if people do still want the challenge of starting from scratch, they could chuck all their stuff into a chest on Permanent and start running around Seasonal/Mining bare-ass naked.
Just a thought.