Here is the list of things I did, they all worked too.
-Changed the terrain textures.
-Changed the skydome texture and made it rotate.
-Changed all parameters of the skyfile, FX file.
-Edited out the objects effects and tweaked their properties like hoth_dust effect.
Added the Ion cannon and destroyed AT-AT's. These props NEED TO HAVE -NOCOLLISION in the msh option file.
-I added a realistic cloud plane. To give the map more realism.
-Added 2 fog cloud objects I made on two sides of the map.
Here are the screenshots, the ion cannon and at-at's are out of map bounds as they are aesthetic objects. AGAIN THIS IS 100% MULTIPLAYER COMPATIBLE, I played my map on the JBA server with 30 or so people and it was a great experience.
Hidden/Spoiler:
Anyways, I'm still going to try and modify the lights from inside the Hoth tunnels and the hangar and after that I'm going to attempt to modify all the sides and add special effects. Effects like new rocket trails and laser effects and separate effects when they impact the terrain and a solid objects.
I already have the effects made but I will try to implement them to this new mod I idea I have. I will make a separate thread until all the progress is done, probably within a month I will have hoth map ready and probably 4 months or 6 to modify all the other maps.
Wow, that actually looks a LOT better than the stock map, most noticeably the snow FX and the skydome mountains. 
