It would, but you'd have to find 5 moderates who aren't concerned about getting primaried next year because that's absolutely what would happen to any Republican who broke ranks and voted for a Democrat speaker.
Slightly more possible although still completely not possible would be the Democrats getting together and both nominating and voting for a moderate Republican who hates Trump (maybe Romney?), and then seeing if 5 Republican voters break for him. If they do then they get to further divide the GOP, if they don't then the narrative of the Republicans doing it to themselves becomes set in stone. They can't blame the Dems when the Dems actually offered a Republican speaker on a plate and they chose not to take it.
IIRC the democrats made this offer
There was 3 names on their list. Liz Cheney, Romney, and then some person whose name I've never heard of.
From a Democrat perspective with the current razor thin margins it makes a ton of sense for them to try to get a moderate in control, as it could shift the balance of power in their favor.
