The community is aging, but it is not gone. Forums at and AVSIM are still active. If you ask a question about a CTD (Crash to Desktop), you will get an answer within hours.
Vanilla FS9 has a few AI planes that fly illogical routes. Ultimate Traffic adds real-world airline schedules. You will see Southwest 737s at Dallas, British Airways 747s at Heathrow, and regional jets at your local municipal airport. It kills your frame rate if maxed out, but at 50% density, it is perfect. fs9 addons
: Upgrades cities, fields, and mountains with high-resolution imagery. The community is aging, but it is not gone