As for landing if there is tower, attitude plus GS both may be used, Without tower i agree with attitude flying only,shortly this is the summary i extracted for myself,
I don't really understand what you have in mind there - perhaps that the tower will give you the airspeed at ground level, so you can compensate?
I'm still don't think I'd go with that - winds can change quite quickly, or even blow in opposite directions at each end of the runway.