[EricH]

If I was an inspector this year (not planning to be), I'd call that a strategy aid, AKA not a non-functional decoration. Therefore, not included under <R15>, much like other lights that have been used to signal that stuff is ready by robots.

HOWEVER: it is possible to make a case for it being allowed in the player station, under <T26>, as a strategy aid communicating one-way to the Feeder HPs, or a case against it being allowed under <T25>.

You could also make it part of the operator console.