So in short this mod just adds loads of disadvantages ?
If you put it that way, yes.
No in short this makes the game a lot harder
(which you may not understand the fact that some people like that) 
good to know that one of them's you
Invisible bullets...? I'm with Dairy
Maybe you could make small ones
Not going to happen, you could add your own bullets if you'd please, but it would just spoil the fun.
Invisible bullets...? I'm with Dairy
tactical doesn't means that you cannot see where you are being attacked
as mentioned earlier, the loud bullet flybys compensate for that, meaning you
have to listen to the sounds. In tactical games, you need to find your source of that problem and solve it using alternative means(LISTEN to the sound instead of tracking tracers from the shooter.). And that is exactly what my style of modding closely follows.
Realism FTW!
