I would definitely recommend
feeding that back to VS here.
I've had some excellent flights with Virgin, but in October I had a crew which really stood out above and beyond - I did give my compliments to the CSD on board, but also gave feedback via the website.
A had a call from VS a couple of weeks later to say thank you for providing the feedback and that it was recorded and passed on to all the crew.
I know it says "comment/complaint," but if you go into Feedback there is a compliment section.