A few threads cropped up with the issue of the underlying math of the system being skewed towards success, a bit too much.
IE. In melee, combatants tend to hit almost all the time, and defense and active defense are no match for offense.
Is that your experience of the system ? Is the system broken as characters become more and more proficient ? IE. Can somebody ever hope to parry tha attack of a warrior with Str5 and 2 expertise dice ?