RO's were never meant to be, and should never be coaches! PERIOD!
When RO's give "Advice", they are doing a disservice to the sport!
I view an RO saying, emoting loudly here, "IIIIFFFFFF....you are Finished, Unload and show clear" the same as "I am thinking about DQ'ing you for.....(add your favorite 10. infraction).....pure coaching and\or intimidation!
How often have you heard an RO say "If I could make a suggestion here"? or "You know, you were really close to breaking 90"! or "You should really watch your finger on the trigger"!
RO's should keep their opinions to themselves, at least until the match is over! If there is an infraction, enforce the rule book, otherwise, don't intimidate the match clients!