Another daemon for managing control groups

I wasn't focusing on the capabilities of those systems, more on that SysV is not the end-all-be-all of init systems to begin with. Basically, if SysV is so good that even systemd and all it brings isn't enough to provide enough "compelling reasons to switch", what would? I was more aiming at answering the "modern SysV" feature set by suggesting to look around to see what else is offered by other (non-obsolete and in-use) systems for a guide.