[Nagot Gick Fel]

If I had to implement the effect of longer weapons in Dominions, I'd just deduce the (negative) length difference from all weapons in the target square from the attacker's AR. Examples:

A barbarian with a length 2 greatsword attacks a square holding 3 pikemen (pike = length 5), the barbarian gets a (5-2) x 3 = 9 malus on his AR roll.

The same barbarian attacks a square holding 1 pikeneer (lg 5), 1 hallberdier (lg 3), 1 swordsman (lg 1), the malus is now (5-2) + (3-2) + 0 = 4.

If a defender has several melee weapons, only the longest one counts. If the attacker has several melee weapons, every attack suffer maluses using the above formula (may yield different maluses).

This would emphasizes the effect of tight phalanxes formations better than the current system, I think. Historically deep pike formations were able to repel knights effectively, but in Dominions a high-morale knight will just accept a light wound before slaughtering his vis-a-vis as if they were slingers.