Question about writing systemd unit for old package

Hi everyone, I'm trying to write a new systemd unit for mini-httpd package, which is using lsb-base to init. Can I replace the old init script straight up, or do I have to maintain both the systemd unit and the old init script ? A related question: The binary itself can drop privilege and run as

Bug#988490: RFS: mini-httpd/1.30-3 [ITA] -- Small HTTP server

Package: sponsorship-requests Severity: normal Dear mentors, I am looking for a sponsor for my package "mini-httpd": * Package name: mini-httpd Version : 1.30-3 * URL : https://www.acme.com/software/mini_httpd * License : BSD-2-clause * Vcs : ht