I think, Adoede, You can drop "power theatrics" and "defensive/offensive wars" from this list (Even the best balanced War will be dropped soon -- i'm sure). They are to much rely on the quality of strategy triggers and [in the case of Wars] on the quantity of strategy rows.
The tanks dropped already, obviously.
// We haven't good triggers neither additional strategy rows.
It's time to "one-row-strategy-builds". Like any Rage. Again. Sad.
MeMan, again:
Chi, Prs are cheapest stats. Str, Agi a bit valuable. Int, Sta are valuable much more. At the point of view of the game and resuming experience and prices of gear pieces on the Blacksmith.
The Size question depends on the specialty/build You are planning, so, there's no measure to say how much You need it, globally.
Using these principles in the heads we are able to say: "It's not a perfect slave. Just a slave."
But he has enough stats to do some jobs. Certainly. As Just J and Adoede already wrote.