I think having 6 primary stats (like in Beyond Divinity) allows a lot of flexibility in character design, and adds a lot of replayability. Designing the game for 1 stat point per level and having a lowish level cap should encourage more strategic character development. Presumably there would be much fewer stat bonuses on equipment, to prevent that from becoming the dominant effect.
What's to say about the stat system? Strength, Dexterity, Intelligence and Constitution are classics, and who could object to Speed or Perception?
I don't really have any favourite stats or stat systems, as long as they are implemented well in the game. No stat sucks, per se, though I generally ignore Intelligence for a warrior or ranger, and don't play mages as a main character. D:OS will have 4 of the 6 skill groups being magic, but that may not mean much since we don't know the size of any of the groups yet. Who knows, maybe I'll finally play a mage character in a Divinity game...
Charisma - Intelligence / Perception
Plenty of resistances - Constitution for poison, etc, Intelligence for magical damage, Perception if there are any psychic or illusion based attacks
Initiative - Speed / Perception
Action points - Constitution
Cost of movement - Speed
Mana/Energy - Intelligence
Hitpoints - Constitution
Chance to hit (melee/ranged) - Strength / Dexterity, Speed
Chance to be hit(melee/ranged) - Speed, Strength / Dexterity
Damage (melee/ranged/magic) - Strength / Dexterity / Intelligence
Weight - Strength
luck - Perception
sight and hearing - Perception
blocking - Dexterity / Speed or maybe Perception
