A few quick notes about the things I don't like....
1) "Craft", "Warfare", and "Fitness" should be renamed to "Thief", "Mage", and "Warrior" respectively. The constellations are shown plainly. It just feels awkward not to just name them that.
2) The "Craft" tree needs restructuring. Some of the abilities seem to be very far buried compared to the other trees.
For example, it seems that I need to buy "Meticulous Crafter" for 100 CP, even on non crafting characters to get to what lies beyond. It's a great ability, but it should not be a gateway one.
3) Fitness tree is better structured, but not by much. Again some odd "gateway" choices in there.