It turns out the closed source polls are starting to support lightning already:
https://www.nicehash.com/blog/post/how-to-use-bitcoin-lightning-network
They haven't got cashu yet though...
nostr:npub1wtgd9ccg76awlp29zl3h466l89wr7hsut0n3ucmtr95h4t29jc6srlsxp2 would you be interested in such a feature?