Funny this got brought up today because as I was working on my "Dark Sun" hack, I was taking a look at stats and trying to figure this out.
I broke it down as follows, but I also was wondering a couple things:
A) What happens when you add more stats? Does this mess with the balance? For example, in my hack I have 6 stats (not including Hx) vs. 5 in AW. I decided to keep the same numbers and just have the sixth stat =0.
B) Why didn't you let the player choose stats as they desire instead of putting 4 "sets" of stats to pick from? Did you just not want people making ineffective characters? (i.e. putting -1 in Cool for Battlebabes or something)
Here's what I mean and what I'm considering for my hack:
Choose one set:
+2, +2, -1, -1, =0, =0
+2, +1, +1, -1, =0, =0
+2, +1, =0, =0, =0, =0
Apply each bonus to one stat.
For example, a Warrior might choose:
Str+2, Dex=0, Con+2, Wis-1, Cha-1, Int=0
Str+2, Dex+1, Con+1, Wis=0, Cha=0, Int-1
Str+2, Dex=0, Con+1, Wis=0, Cha=0, Int=0