I always felt that the Path Selection window should be two rows instead of one, once you added new classes, You'd probably need Stardock's widget thingie to redesign the window, though.
Someone added a few classes a while back, which is a concept that I think should be encouraged, not discouraged. Trying to shoehorn everyone's playing style into just 5 paths tends to water things down a bit, or generate excess clutter, depending on how detailed you want to get with the abilities...
But then that's an issue I've seemed to have a lot with the various iterations of Elemental. Instead of encouraging more options, we get options taken away, some of which can't be easily restored by modding, and some not restorable at all at this point. Hence why I tend to think the game has been dumbed down a bit, IMHO. This is why I burn out on Elemental Modding fairly quickly when I get the bug. I want to take the game in a direction in my mods that has been cut off...
/rant off
Sorry about that little diatribe there. I'm looking forward to seeing where you end up with this! Keep up the good work!