Is there a reason why pilots that can fly track are not asked to fly a track.?
Most modern jets fly magnetic track up on their HSI and this could solve the guess the winds aloft problem for radar.
This would also keep the pilot flying, scaning, and feeling more in the loop, also it would ruin his breakfast fat intake but improve his waistline and help keep his arteries clean, of course he could also starve to death if he had to buy his own breakfast at airport prices on a uk pilot salery!