If Eureka was worthwhile content that I'd want more people to enjoy, your idea would be great.
But it's Eureka. I feel bad whenever I see a new player coming into it because I wouldn't recommend it to my worst ene- okay, okay, I would, but not to anyone I like.

So the last thing I want is extending its lifespan. Just let it die and eventually nerf it to the point of being completely soloable in one evening. Then I might have no qualms introducing people to it.