Make the software able to load as root then chroot & drop privileges to a 100% unprivileged user which would make the software more effective and secure for deployments with larger amounts of (potentially untrusted) users.
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There is now a guide in the wiki for setting ZNC up chrooted. It's perhabs not the best of all solutions, but it works.
There is also a global module that does this which isn't completly ready yet.