Machinbird
I had envisioned a tube similar to pitot, and in the airstream, but blunt, to forestall abrupt icing. I also think to alleviate unwanted angle sensing, the "bulb" could have "Cells" sensed through a computer that selects the group closest to stagnation point. Not a panacea, but perhaps a bit more ice resistant, and alleviating Drain hole aberrations, etc.
Sat in your old office once upon a time, now there's a foxhole!