Mel. Not sure it changed anything at the time of FSTA (everything that needed AAR had a plan for P&D (MRA4, Nim R1, C-130 J & K, E-3 (as well as Tornado, Typhoon and JSF)) but nowadays...........
That said, I see no reason why any aircraft couldn't be fitted with a probe (particularly if they already have an AAR system (RC-135 and P-8)), it just depends on how much you want to spend on D&D and OT&E etc.