and the retitler currently doesnt send those messages

FWIW, Janitors Thread Retitler v3.1 does send a /msg to the base-node author by default. The message is something to the effect of Help please!? has been retitled to Querying CGI parameters with CGI.pm. The message may be suppressed with the -nomessage (or -nomess for short) commandline option, but I've only ever used that option in testing on my own nodes. :)

It also adds Janitors edit attribution to the bottom of the base node being retitled, by default. That can be suppressed with -noattribute or -noattr. By default attribution looks something like Retitled by davido from "Help please!?"