I'm a big fan of both Path of War and Spheres of Power. I haven't quite replaced Vancian casting entirely with Spheres, but with a group of new players the Spheres was certainly more intuitive for them. Alongside Spheres of Power my martials are fairly capable of holding their own, both in and out of combat, due to everyone having a certain niche.
I'm also in the process of working with something to handle the Christmas Tree effect, similar to Mythic Evil Lincoln's. Along with that is also a small change to caster's involving two attributes, rather than one pumped attribute. Both have seen some success but having been tested enough to be sure yet.