Admin, I'm thinking of your Team Concept as a user, and suggest you consider cleaving the user experience on multiple factors. Not just by "Aircraft Type" but by "Team" parameters like Maintenance, Builder, Aviator, Instructor, Navigation, Regulation, ATC, Student, etc.
If a given user is isolated to an interface experience of only like-minded participants, there's not much opportunity for the cross-pollination of ideas from participants with a fresh take on issues, critical review of concepts, and accepted wisdom being thoughtfully & respectfully challenged. It is this "contest of ideas" that I value most highly from the interaction of a broad variety of participants. If the structure of your revisions supports or enhances such interactions - so much the better IMHO.
Perhaps it is impossible to eliminate trolls in such complex designs, but that's true in real life interactions as well. Happy designing :)