Not a Tailscale user, but...

For any software or tooling with a complex config, my ideal would be to have a superset of this feature, to provide "intelligent diffs" between full or local configuration states. Whether active or saved. So I could compare not just my current active config and your current recommended config(s), but also between your prior-version recommended config(s) and current recommended config(s). Or between my current config and a prospective new config I'm working up. Or between my last-year active config and current active config.