Got it! Thanks to Gwen, Courtney, TA. Can people in this situation: you had a favorable experience with UKBA staff, preferably abroad, but also here, and you don't know the person's name...
If you can simply put the date, time, place, and application type, and a phrase about why it was above expectations... Also, if you got a very timely or helpful email from UKBA consular staff, etc etc... Append to the body of this thread please. I will take a print out to the appropriate Director or Deputy Director at UKBA.
Thanks to people who help out!