yes,for human lods,i have a basic guide,
usually every 2.500 degree = 50 metres
for lod 0.00000 max 2000-4000,inc hiddenSelections (HWTL):3000 max (swtl)
2.500 1000-2000
5.000 500-1000
7.500 300 (shadows)can do 385
10.000 64-100,
tested ingame,36 high face custom playermodels in excess of 3000 faces
within courtyard on Nogova(cpu eater),with 4 panzer tanks included.
i was able to run around them all with no lag whatsoever.
however,forests on Nogova lod greedy,so make sure the textures
on the lods are good as the main lod.