k, im going to try to explain this without sounding too retarded 
I was curious about making a wall surrounding a base but instead of 1 or 2 places you can plant tnt at, you can plant anywhere. Take mp_beach from rtcw for example. There was the door and the wall to blow. Instead of that, could you line up the entire wall with say 5 tnt triggers so the offense can choose where they want to blow it? If possible, is it too difficult to even bother or something that may just take a little time?
Some may ask why. My answer to that is for dynamic gameplay. Im so tired of the typical defense and offense in rtcw. By having different possible entries, the defense will be forced to react on the fly (to an extent).
