... if you edit raw files as a non-scripter i think your asking for trouble. Also that would cause every user map to have the same changes which also some people may not want in a lot of cases, those of us working on multiple projects at once may want to have separate custom changes that are map/mod specific.

what did you name your map?

It could go either way as far as models or bsp.

There are a few good tutorials from the WAW days that will guide you through this process.

I noticed treyarch will use blend textures on small terrain patches to get the burnt look on top of bsp brushes. A lot can be achieved through csg subtracting and breaking up the bsp into small chunks to achieve this effect. BUT REMEMBER to always work inside prefabs when using csg subtract, else you will destroy all your zombiemode volumes ect and make a giant mess. 

I have not played with rotation yet in b ops3.. however in WAW, I usually just Play around with the kvps until it looks right. Also rotation starts from the xmodels handle (origin) so keep that in mind if your rotation seems to happen on a strange angle / axis.

yeah, zniic is right the aa settings are not the issue here. Im using the default starter and getting this same issue as well.

here is a rant any way cause I'm awesome......  I agree that zombie mode is less than I expected.. one new perc that doesn't do anything cool? really? where is a badass wonderweapon ? how about some god damned zones? yikes. but after all that complaining aside i think the transit mode is fun to play, but the classic feel of being trapped in tight areas with a lot of zombies has gone out the window and that i feel was a core element of cod zombies... and GREMLINS wtf dont get me started on the gremlins... of all the lame ass ways to annoy the shit out of me.. yuk..   Nuketown is absolute rubbish and not worth the extra cheese you have to spend to get it.. but i digress.. think I'm going back to work on my own map now.. lol.