1. More skills. If somebody wants to be a blacksmith for example. What does detective type go under? I dont want a game that has 500 skills but more then the dozen they have would be good.
Blacksmith -> it's a background thing. As stated in the Scales of War backgrounds article, the cost for a PC to build arms and armor is the same as if he bought it off the shelf. 2 days to make weapons, 4 to make armor.
Detective -> Trained in Perception and Streetwise. Possibly trained in Knowledge skills (Arcana, Religion, Nature, Dungeoneering, History). Good Int and Wis help, but aren't mandatory. Skill Focus helps a lot.
2. A little more ability to develop skills. If you want to be a master in history but dont have a high INT, you are SOL. Some ability to have some skill points to spend on skills to make guys more unique would be nice.
My 4th-level PC rogue is an archaeologist. His History modifier is +8 (+2 level, +5 trained, +1 Int). That is good enough for most checks.
The skill granularity now is:
Untrained with low/no ability modifier.
Untrained with good ability modifier.
Trained with low/no ability modifier.
Trained with good ability modifier or Skill Focus.
Trained with good ability modifier AND Skill Focus.
3. A little more detail to combat. Some of the shooting through allies, and other combat mechanics are a little too simple.
Like someone else said, this is part and parcel of your positive #2.