I think it would be based on strength with the ability to buy bags and such, maybe something similar to what Dragon Age though instead of the set inventory it's based on strength still.
Yeah I've been thinking about how they were able to get rid of Attributes (if they in fact did) and have come to the conclusion that they could make them invisible but not really get rid of them. That leads to; Well how do you determine base attributes then? Here is what i've come up with so far for Strengh and Speed.
Strength and Speed would be determined on a sliding scale based on the body type you choose.
Bulky body type = High Str, low Speed
Med body type = Med Str and Spd
Lean body type = Low Str, High Spd
It could be broken down even further than that:
Bulky upper body type = High Dmg, Low Rate of Att
Med upper body type = Med Dmg and Rate of Att
Lean upper body type = Low Dmg, High Rate of Att
Bulky lower body type = High Jump, Low Run Spd
Med lower body type = Med Jump and Run Spd
Lean lower body type = Low Jump, High Run Spd
And of course perks during game play will give all characters the opportunity to increase all of these above base starting levels.