I would really like to see a new but fairly rare com pop up randomly and when spotted on the map would say UFO such how we have SoS, Com, this would be UFO.
This would act as a Com style, but instead of the reward through a system like hijack / nest where you are paid X amount on the difficulty of it.. your reward only comes from what you looted from these unknown alien ships. Essentially could be mods, resources, etc. Perhaps it could be a cargo ship being escorted and the cargo alien ship is what we nest / destroy and depending on difficulty = reward values.
Another idea which I would LOVE is to be able to board an alien ship, take it over and use it for yourself if you have the pilot license available for it. Would be cool to fly around in a special alien battleship that had more slots than a titan but required a huge effort to get it giving you a sense of accomplishment.
Either way its time we make aliens an active pve force to start invading and giving us something new and exciting to do
Think of it as a retaliation by the aliens for us going to their wrecks and stealing their stuff lol