Making all stats useful for all classes is what I would like to see. But perhaps through feats, assuming we will get more pics.
E.g.
Combat Awareness Pre-req 13 Wis Can't be flanked / Resistance to Sneak Attack, +1 AC, +2 Initiative
Read Opponent Pre-req 13 Int Advantage to Trip, Disarm, +1 Attack bonus
Aaaaaaand we've recreated 3.5e/Pathfinder. Let's add in combined STs for good measure: Fort ST is Str+Con, Reflex is Dex+Wis, Will is Int+Cha - this encourages you to not entirely dump a stat that governs an uncommon ST (Str, Int, and Cha).
I would like it if all stats were more useful. E.g., Fighters get more maneuvers/feats based on their Int, Wizards can maybe wear certain armors with higher Str, everyone can attempt to use spell scrolls with Charisma (Use Magic Device) skill. It wouldn't be necessary to have a perfectly even distribution; essentially each class would then have a wider range of playstyles depending on your stats.
