I am personally a fan of inetd and I think that there's nothing inherently wrong with the concept.
A simple inetd implementation would be nice to have. It means that you can just code a daemon without any networking related code and just let inetd hook up stdin/stdout/stderr to the sockets. You can sort of hack around this using nc + simple shell scripts. A suckless inetd should be relatively straightforward to implement. I am not sure if quark should support inetd though, as we would need to support both inetd and the builtin networking code.
