Validation is probably not something that would make the first v11 release but rather an 11.x minor release follow-up.

Good points. This system seemed elegant when we first wrote it, but that was before we had proper Cron and task hooks.

It worked well for what was available in the ocPortal era, but starting in v10 it became a bigger problem than benefit. As things evolve, so do the efficiencies of the systems in place. And now that v11 has a proper scheduled tasks system and Commandr commands are relatively stable / reliable, that would work much better than raw PHP.