So I think builds need some spicing up and a little more randomness when fighting. So I was thinking.
What if strength added a "small" crit(150% dmg) chance as you added points into it and dex added a small double attack chance.
Both of these would max at 5% chance at 1000 str and 1000 dex and both would start at 0.5% up until you reach a base of 100 str or dex.
From that point forward it would act as a sqrt function increasing rapidly at the beginning and tapering off as it reached the 5% max.
These are just some random thoughts that I thought would be cool. not too sure how hard the implementation would be but i think it would be a cool idea and would add more depth.