I like the rebalancing, you still need prep/strategy/math/skills /full dojo for Nix, but it's less dependent on luck.
I don't know if this would be useful for anyone else, but a hovering tooltip above the sigil showing its name (and maybe the description) would be useful. Early on, I kept on forgetting which I had picked. I don't think it's a big deal because the name is one click away but it's something I thought of.
Also I'm curious if you have plans of composing more music for this game? Not trying to sound demanding, I just really enjoy the music :D