Been thinking about breaking up combat like this:
Melee/Parry: Agility + Brawn
Grab/Throw/Block: Brawn + Perception
Ranged: Agility + Perception
Very light thrown weapons like throwing knives and blades use +Per for damage and can use either Throw or Ranged. Actually, maybe just Ranged.
In combat, you can Parry an attack, Block it (requires a shield OR a free hand to hold the attacker back) or Dodge it.
Parry: Agility + Brawn
Block: Brawn + Perception
Dodge: Agility + Cleverness
Hm. Maybe block should always require a shield, dunno. I like the idea of struggling for someone's weapon, though. Maybe it should just be penalized based on the size of the weapon- blocking a fist is unpenalized, a knife -1, sword -2, halberd or huge weapons -4.
On a tie you have to choose another of the 3.
Now if you're super-agile, then you can effectively fight with a sword, throw a knife or fire a bow, but not throw a spear or use a shield. Nor can you wrestle well, if someone does grab you.
If super-strong, you can fight well with a sword or a heavy thrown weapon like an axe or spear. I'm not sure about making the fabulously strong guy good with a thrown knife, but I could see it, Conan style.
Additional game effects- the Wrestling skill goes away- it's now covered under Grab/Throw/Block. Hm. Then Grab/Throw/Block would have to get a +2 bonus for Rats and +4 for Wild Rats. Or perhaps +1/+2 would be better, with these being double-cost skills anyway. Dodge might well get a -1/-2 to balance that.
And White Rats should probably change to -1 Agility, Size 1. That -1 would balance out their increased social status. -1 Brawn would be weird, and would result in them being worse at non-size-related strength tasks than normal common mice.