I am sure he means this>>>>>
see, the empty ditch surrounding the castle going to the left from the little pond, if you look right from the pond, the moat is full of water.
Yes, but lot of us do not find it aesthetically pleasing in the long term. It is not bad artwork at all, but having a ditch that is never filled is a slightly annoying, maybe cause my mind wants symmetry with the moat.
I agree. Adding options to fill the moat with water, crocodiles, burning oil and others which provide varying defense bonuses could be a nice way to spice up the game