IF it is mainly just a UI change and making it less difficult to implement PrEs, good.
BUT if you tinker with the way things work, mechanically. Bad.
By going to a "tree" system like every other mmo, it could ruin what is for me the best part of this game and that is freedom of build choices and decisions.
As long as the main system remains I'll be happy and even take some adjustments to values and removal of antiquated enhancements. The UI and selection process is clunky to say the least and does need some user friendly improvements but the system itself is solid and does not need messed with.