I have to agree on this one

For artillery units, lets say five men per gun plus 20-40 men to stand behind them looking like idiots (as is traditional in TW games).
You can lose them. I've been overwhelmed by crossbolts before. I mean they have uses, it's just they just stand there. I'd rather give them rifles and have them covering the artillery while it fired, or swords to hold off a charge while the guys at the seige weapons run or something. As was previous, they were by far the most useless melee unit ever.