Now that the excitement of a fresh idea has died down, I'll take a more objective look at this.
You can get about 45 Ability points through leveling up. There are also apparently free Ability points you can get through questing/the main plot, and how would that work if there were two pools?
It takes 10 points to get an ability to Rank 4 and 15 to get one to Rank 5. So if you split them up in to two categories getting each... you could max out 3 Primary Abilities, or get four to Rank 4.
On the other side, the secondary Abilities, if you get the same 45 points, then that would certainly be too much, so you'd have to reduce the rate you gain these instead of matching the primary rate, and then...
... Yeah, this may just replace one balancing headache with another one.
Also, Reflexes should not be on that list, it has been deleted.
