Here are a few more ideas perhaps…
Pulsar lost colony, like Artemis, but from a first person perspective.
Guns of Icarus Online, crew piloting blimps working together to beat the others
Edit (Comparison of games against criteria set out)
1.) Does it encourage team work and discourage lone wolf behavior?
Both encourage working as a team to help improve the chances of the ship that you all share surviving against sometimes very difficult situations.
2.) Can you apply effective, real world tactics to it?
Guns of Icarus: Kind of, if your ships get separated then you can be picked apart by a skilled opponent team. It certainly promotes intra-ship communications as the engineer can’t always see everything that’s going on, just components that are being damaged, so the captain can call repair priorities, or the gunners can be told which airship to target first and potentially what type of ammo to use. Captains can also talk with the other captain(s) in their team to ensure that comms chatter is kept structured and useful.
Pulsar: I would argue that if Artemis can be claimed to do this, then so can Pulsar, as it is an FPS version of that game with a bit more. You can also teleport onto other ships or some planets. Whilst you can’t have multiple ships in the same game that may change as the game is developed.
3.) Does it challenge the players/members to a higher level and/or their highest level of potential?
Both: Yes, if any single crew-member is weak, or wants to, they can have a big impact on the effectiveness on the rest of the crew. By pushing every member of the team to do better the team as a whole improves.
4.) Does it avoid things like Free For All’s like the plague?
Both: Yes, if you have folks running around doing whatever they want then your vessel (whether space or air ship) will quickly meet it’s end.
5.) Does it allow and put all ADI members on the same team and avoid separating them at all costs?
Pulsar: If you create a crew you can password protect it if you want, allowing an ADI-only crew.
Guns of Icarus: You can spread out or team up as much as you want. You can create groups and queue for games together and can make sure that you have pure ADI crews if you wish. (Sometimes splitting up to experience completely different command and play styles can be fun and allows you to bring the best-practices of other crews into your own)