I hope stealth is a well thought out implementation for vehicles (Since the x-35 and commanche are in the game) instead of either A;Just not appearing on radar or B:Having no difference to standard aircraft.
They should have it so that when the vehicles are at a certain angle from a radar source like the belly of the lightning facing flat against the radar (within a certain angle range) that it should appear more visibly that say broadside frontside on.
Harder to pick up when flying low
Flicks up on radar when gear is down/Bomb bays flick open wings are loaded with ordanance etc
Hope this makes sense I rushed this a bit :P