@ctaylor said in Things I would look for in a new vulnerability detection program:

tray icon that has different states such as "scan not performed in xx days", "programs with zero-day vulnerability detected", "programs with feature updates / bug fixes available"

Yes, and with changes of colour depending on status.

One thing I liked about PSI, was the system score. A nice big green 100% when all patched. This was a great feature for the non-techies that I help, prompting them to take action when a program had a update required...