I'll give you three games, and tell you what I like about them. Some of the stuff I like about the other games, I can do in FS2, but no one seems to really actually care.
Here it is:
Independence War 2: Fun physics that require more than just shooting skills: it requires actual thinking.
Macross VFX2 (Just beat it, I think, froze up before I could save): Fast-paced battles, great universe, and very, very cool missle storms.
Macross VO: Good physics (almost as good as I-War 2, but more fun), cool universe, and cool animations.
Now, except for the animations part, I can put every single thing I mentioned into FS2. I would, too and release it to the public, except for one small problem: no one cares. If I release it, it'll get knocked down to the bottom of the page by a bunch of newbie questions, I won't bump it, because I don't want to be rude, and it will just fade into obscurity. What this community needs, if it wants this game to survive, is a centralized, highly motivated core of people working to release a collective MOD that will update FS2 to semi-new standards.
I volounteer, if that ever starts. I can do phyics, battle pacing, art, and storyline.