Regardless of what buffs are given to the Draugr I feel like it's still gonna be weak regardless with how unbalanced the Wildcat is. Currently the Wildcat can just instantly shoot down any aircraft they want with just two button presses unless they're firing at an armored aircraft such as the attack choppers and air transport vehicles. They have really fast reload speeds on their AA missiles and, unlike every other vehicle, the Wildcat has ZERO cool down between AA missile launches meaning that they can fire both missiles at once which will instantly bring any light-armored aircraft down since they only take two hits to get shot down and the Wildcat suffers no penalty for missing both shots due to countermeasures since the Wildcat reloads its missiles so fast they they're both back by time the countermeasures run out.
Also even if they buff the Draugr's missile countermeasures it won't help when a jet is just tailing them since the Draugr has a slower turn rate than normal jets and its wider frame makes it an easier target to shoot at without missing as much. I think that it should have a piece of gear added that allows it to produce a smoke screen trail behind it that lingers for a few moments and any aircraft that flies through it will get temporarily disabled since aircraft engines(especially for jets) can't handle smoke entering their air intakes since it'll typically cause the engine to jam/stall until it is cleared. This would force jets to stop tailing it for a brief moment so it can either break LoS or turn around to target the jet and if the jet decides to ignore the smoke screen their engine will stall causing them to lose the ability to speed up or turn for a bit and they'll slow down during that time.
On top of that buff I feel like the Draugr should have a tweak made to it where if the Draugr is actively climbing in altitude it speeds up past its normal speed and if the Draugr is actively descending in altitude it slows down below its normal without stalling out. This way the Draugr can climb very quickly and get some more time when descending to do it's strikes on troops. However though it should be made to have some restrictions for this behavior so it doesn't accidentally mess up players trying to just simply fly it(maybe even a special mode that allows this type of speed like how the stealth helos have).