Any way to set the priority of a job from wincron? So that a job could be started with greater or lesser than normal priority class?

Sorry, there is no built-in way to do this from WinCron. You may be able to find a 3rd party program to do this.

Do you think it would be a worthwhile addition to WinCron core features?

I think it would be useful to be able to set priorities for jobs.

In the meantime, I've altered my own (Perl) code to reset its own priority. So it isn't an issue for me at this time.

Okay, I'll add this to my Enhancements forum for evaluation.