Quote: " Make a animated muzzle flash"
Muzzle flashes are stale images which simply get rotated to give the player an illusion there's an animation/variety.
Quote: "we could make a simple decal to simulate a stright line matching up with the crosshair."
Seems a bit pointless to me and it wont look good at all.
Quote: "Instead of assinging the object to do x amount of damage in area, we have assigned the weapon to determine how much damage based on segments in the area"
And how exactly are you going to do that...The only scriptable weapons I'm aware of are in PB and I don't even know if it's available in MP.
Quote: "Imaging with giff support omg man we could animate walls for some super creepy effects"
Use bond1's animated shader (forgot the exact name)...
Quote: "the art part will be the hardest"
Quote: "Making a custom decal will be very difficult"
Not at all.
An Idea if this is to be incorporated into MP is to mess around in setuplevel.fpi and add conditions if x weapon is held,to show decal or something else of the "dev's" choice.The problem I see is the limitation with the states,because you have to be careful not to trigger something and not be able to go back into game menu/game.
I might give this some thought and see what I can come up with.