The G-LBAL initial report brings the lack of CVR/FDR on military and police aircraft into sharp focus. In my experience it's long been the military ethos to manage with the minimum equipment required for legal flight in civilian airspace. The real money has to be spent on the aircrafts ability to fly, fight, and survive in the 'battle space'. Whilst it would be nice to have wx radar, I can't see a change in that ethos to fit items that do not contribute to the ability to fight. I think the attitude from above is still 'avoid iimc', land and wait for it to clear if you have to, it's certainly the way the police avoid any sort of instrument qualification requirement.
Certainly from a tactical point of view (with my EWI/EWO/ACTI hat on) a wx radar would be a beacon to the ememy defence sytems in a slow moving aircraft that relies on remaining undetected by using terrain masking, so would not be used in a 'fighting' scenario.