Great job on v4.0! Here are some comments.....
Since, as usual, there are soooo many great things, I will just speak of the few odd things I have noticed.
As far as 30 sec knockdowns, I haven't seen that. Mine are about 5-10sec. I have noticed that the pc can get killed after getting knocked down. for example: My pc was shot, knocked down and continued to be shot at with an assault rifle. Not sure if this is intended, but it is realistic.
My Vats numbers seem high relative to my skills. For example I have a Per of 4 and SG skill of 17; with a Chinese pistol I get about 40-60% to hit in Vats from about 20 feet. However it is lower using a hunting rifle??? The only thing I did was lower the spread on the Chinese pistol. Could that affect Vats?
Absolutely love what you did with the perks! Great job on both the new and old ones!! Related to this I wanted your opinion. Just to add some variety, what do you think about any of the add-on perk packs out there? Yes there are some very overpowered perks like radiation healing and such, but removing those (or not using them at all) can you recommend any that work well with the spirit of Arwen's Realism??
Lastly sneak: Overall this is excellent. Much tougher at the time that it should be. The pipboy light really is a bad thing for stealthy types finally. Now obtaining some type of night-vision is a must, esp. when I use Fellout. Easier to sneak in the dark! The enemies do seem to find you easier in the daytime, even if you are a hundred yards away hidden under a bridge.
Now you get to play huh?
Mahalo,
Nemesis.