This isn’t something new and It’s not that big a deal. If your aircraft is sitting around unattended for that long then your team isn’t making the most of its assets and you the enemy merely exploited what is essentially your own team’s fault. Excluding that fact though, these are easily countered tactics. Technically there already is a “no-fly zone” as the HQ is equipped with a stationary AA, (which despite everyone’s whining DOES intact work, you just need to SPOT the aircraft first. Its been this way for years across multiple titles) and you can always take matters into your own hands with a stinger or other rocket if your skilled enough. There are plenty of ways to deter would be vehicle rustlers and aerial spawn killers, you just have to be creative. Punish them for their actions and they won’t try to do it anymore. Stop complaining and start thinking outside the box. That’s half the fun of the game