I wrote it a few weeks back but I've been dwelling on it so I'll repeat it...

Adding a C flight to larger squadrons, including continuity within each flight so that you know who will lead your flight and who is "usually" in it....not just HA's. Also, with rank and experience be able to take over and move to different flights. I would think there would be more of an immersion factor when the men who are always in your flight don't return and the "new chap" comes in.