That’s a classic: encastle on top of an hill and shoot the hell to the enemies. Of course it is nice if you have some spare forces to harrass the enemy and slow it down… and if those forces are 4 bull centaurs with Taur’ruk and a destroyer you have more than a disturb force
I played skaven the other day and we both castled - on diagonally opposite corners of the board! I didn’t realise what he was up to until it was too late (I’d put all my army down while he was only about half way through).
Strangely enough, it was a draw. The only combat was my khans against his giant rats, and destroyer against HPA. Which it got through in one round.