flightleader, I might be missing something in your post but what does it matter what form of frozen water is on the top of your wings? The top of the wings must be clear of contamination, whatever that may be.
Do you brief your cabin crew regarding wing contamination? If not, how do you check your wings are clear before taking off?
the last thing I need is a cabin crew to second guess my decision at the takeoff position.
That is a very worrying statement. CRM?