Some very good points Centaurus. I cannot disagree. However you said...
One PPRuNe contributor in this thread scorned use of the ground speed indication on very short final as useless.
That would be me, for the record what I said was...
Scanning groundspeed for rotate point is about as useful as scanning groundspeed at 100' agl on final.
My bolding this time around. Your point about "trusting' ground reports of wind is one I take to work everyday. Looking for GS for me is not the solution or really required, simply glancing at the wind vector arrow does the trick
GS is only part of the story ie is it a quartering tailwind vs headwind etc.
I still feel that scanning GS on the TO roll is problematic, partly due to update rates on the particular box, small as that may be in the scheme of things but mainly due to the small window between "power set" and "V1" to scan all the other useful stuff. Anyway, each to their own.