Two Handed Weapon Wielding (Optional Rule):
As the rules are written, there is very little reason why a wielder would use a two handed weapon. They only inflict slightly greater damage than one handed weapons. Strength bonuses, if any, are the same weather using a weapon one handed or two handed.
In addition, the rules are biased towards fighting with two weapons. If a pair of weapons are used, each weapon inflicts full damage. In addition, you get the full strength bonus with each weapon used.
To balance this out, use 150% of the normal strength bonus when wielding a weapon two handed. For example, if a character has +4 to damage due to strength, when wielding a two handed sword, they will get +6 to damage. This does not include other bonuses to damage such as weapon or skill.