It's not even man power.. it's knowledge. None of us actually know the formulas for Tyre physics or the variety of other things LFS supports. There's stuff like pacejka, but we know the flaws there as well.
LFS does a lot more than we think in terms of physics.
Some people handle LFS like a Religion, come on wake up there a alot of good Sims out there. Rfaktor 1&2 are nice, Pcars get better and better every mounth. Let the Devs work maybee it cost 10 Years or 15 to make a really good S3. LFS is my Fav. Sim but it will never die. I play ELITE Frontier since today