Ludial said:
getting the leader with a lance risks getting a bolt right in your face.
Pretty much everyone here said that even if you're not big on ranged, bringing a crossbow at least to sieges is a good idea. this way you can do something to diminish the ranged threat to your own soldiers while waiting for the thrice-accursed belfry to reach the walls.
You don't fight sieges much, do you? If you did you would've noticed that ranged weapons are much more important there, since unlike in the field you have nowhere to run but have plenty of cover.
I fight a lot of sieges. I marshalled the conquest of all the former Vaegir lands. And anyway, i have always 70+ elite archers on my side. I i'm low on health i pull out my board shield and cover myself and the best archer i find (if attacking). If i'm defending, well, i will give xbows a try, but i have only 36 proficiency, i'll do much more damage to the enemy if i block the ladder with 3 board shields and occcasionally kill some1 with my 1 hander ( 420+ proficiency).