I'm just a Burg kind of guy, so sue me. It's literally impossible to ender pearl in, fire any weapons of any sort in, and even if you somehow managed to get tnt to go off and cannon it at my castle, the seperate towers can't access anything else, so it would be a momentary breach and would be soon dealt with.
DRAWBACKS FOR ME:
Since I can't actually have any openings that would allow ender pearls in, I cannot fire on you guys, either.
Tha blazes outside damage me, too.
I have to warp out, and thus my exits are predictable and possible to be camped (My Burg is NOT, it's my refuge!

Blood has specified many times that the wars are not castle takeover, they're pvp. So, guys, my castle is simply a place of refuge and safety.
...............covered in lava and blazes.