Re: I don't understand...
"Devuan looks interesting, but last time I checked the Devuan repositories didn't have a lot of the packages I use on Debian."
Devuan repositories use Debian repositories as their upstream. The mirrors either host all of Debian as well as all of Devuan, or use rewrite rules to redirect you to Debian servers for the stuff that is not in Devuan. It should all be there. Which packages that you use are not there?
Sure some things that rely on systemd that the Devuan developers haven't managed to remove that dependency are likely to be blacklisted, but if that's the sort of package you need, you might as well use a distro that uses systemd. I don't think there are many of those.