maybe we just need hotter pitot tubes and vanes
oh, and even without GPS, if you are level at cruise power settings, there is a good chance you are making cruise indicated airspeed.
I want all those who are NOT pilots to know that we train, when we are very early in our pilot training how to deal with loss of indicated airspeed, for what ever reason...
In the larger planes, we actually have a piece of paper in our POH which gives power setting, pitch attitudes and other things which could be used IN LIEU of indicated airspeed...even offering things like this if we LOSE THE RADOME for some reason or another.
I love all the advice from non pilots or engineers, but the best thing I could ever offer to an aircraft designer is the term: KISS
KEEP IT SIMPLE STUPID
but it seems that modern planes have done just the opposite.