That would be absurd. Singed would never agree to that even if you accepted such a condition.

[Calmly dropping what was less a leap than it was a slightly long step in logic.]

And a sudden halt in Shimmer would cause more damage than it prevented; the withdrawal alone would tear the Lanes apart. On the matter of Shimmer, I think a compromise would be best--allow some alterations to its composition to mitigate the worst of the effects it causes, and dial back production.