Originally Posted by
Keldain
Single Weapon used to be a weapon specialization once upon a time. Not sure if was 2, 3, or 3.5.
Also in PnP you could use 2 hands on a single hand weapon to get the added Str bonus. I don't remember if that was a feat thing, or anyone could do it. It's been a few years. The advantage to this is a free hand and still be able to use the off-hand for something. Easiest way to impliment this in-game would be give the 2h str bonus if you are fighting single-handed.
Finally, in Ultima Online, you had to have a free hand to drink potions. I don't think anyone wants that "fix" but in PnP typically a DM would likely require a free hand for partial actions such drinking if you dont have a free hand. I always made my players at least drop thier off-hand weapon if they wanted to use to use an accessible item.