I agree that the changes are too biased towards a classless character and do not provide any incentive for specializing.
Investing ability points in skills should yield more benefits than just increasing the number of skills available (at this point this benefit seems irrelevant - having more than 3 spells per school is not necessary). A higher skill level should unlock more powerful skills, improve skills and/or reduce AP costs.
So, if the new system is retained, skills should also be given a skill level pre-requisite in addition to the character level and/or attribute pre-requisites.
