Every XR Coder has access to the source and can independently decide to make updates, with further support from the rest of the team.
Well that's it right there - the catch (with further support from the team).
Anyone can do anything except it will be met with our authoritative wall, your 3d artist obviously is immune to this and do whatever they want evident by the last absurd patch. There is in fact many 3d problems with the game that I'm sure your 3d artist can handle, but like I said (priorities). And saying XR coders have access to the source is like saying "oh it's open source (to me alone) but if you're an xr coder (which only I am) then it's truly open (insert sarcastic smiley)"
Now there's probably a better area to discuss this, but when you look at the front page of newerth and this topic "no troll patch for you" it's a very tastless ugly topic to have pinned, and just makes me feel the development situation is sour/dire and self destructive. All the more reason to relinquish the project to other willing participants.