Well, today I found out that this seemingly innocent little adition can be used as an exploit to gain "invincibility"!!!
Here is how:
Coolbiker and I decided to have some fun at megacityone today so we went there and messed around a bit, blowing each other up. At some point, I got the idea to fly inside the moon orbiting megacityone and just stop there (yep it works, there are no collisions in space).
I then turned around to cool and just started shooting at him from inside the moon. To me it looked like my shots were just hitting the moon from the inside and not cb, but since cb didnt have zar's mod installed on his client, all my shots hit him perfectly and ultimately killed him.
It also works the other way around: Coolbiker couldn't hit me. On his client it looked like all his shots hit me perfectly, but on my client they simply hit the moon and so I took no damage at all.
After having a bit of fun, blowing cb up about 3 or 4 times I decided to come here and tell the staff about this exploit, because I'm such an honest guy

My resolution to this problem:
Either disable the modding of the client somehow or introduce collisions in space.
cheers
Flowstyler