From a min-max standpoint, this attribute system is incredibly limiting. The only two builds that really work with this system is support caster and archers. Here is why I think so:
Anything that deals damage but can't stay extremely far from the fight (this includes casters since enemies can clear distance pretty easily now) is stuck between a rock and a hard place. You need HP to take any hits that might come your way but you need to stack all your attribute points into strength/finesse/intelligence just to maintain you damage (not even to increase it). You could sink combat points into vitality to still get an HP increase but then you miss out on your schools.
For a support caster, just take utility spells and only worry about hydrosophist (for heal increase) and geomancy (for physical armor restoration). All of you attribute points can go into constitution to make you healthy while you make sure to pick up a mixture of physical and magical armor. Take a shield too as I finally managed to find a shield that actually does give block chance so blocking is still in the game. If healthy enough and with a good enough shield, this build can support without having to worry too much about incoming damage.
For archers, sink all points into finesse to maintain damage. Sink all combat points into huntsman to increase your damage and range when you have the height advantage. This range bonus starts to get really insane, allowing you to effectively stay safe from combat, especially when combined with special arrows for CC. The damage bonus from the height also means that your damage is, basically, increasing each level.
The build this new system hurts the most is tanks. You need to sink points into HP to eat hits for your teammates. However, if you don't sink points into strength (and it takes both points to do this, I believe) then your accuracy and damage will continue to fall each level. Eventually you'll reach a point where you can no longer draw agro because you simply cannot hurt anything enough. On the flip side you can sink points into strength to avoid this but then you're basically a dps with a shield and don't have the hp to take the hits.
The system, as it is right now, definitely needs to be changed. If the goal was to prevent min-max builds and comps then it doesn't currently do so given the state of archers and support mages.
