Amazing mod, I love it, and it works. There are only two flaws ive found, and they're incredbly minor.
1: The ice pylon description doesnt properly disaplay. Works fine, just doesnt show up.
2: On the worldmap, allied units are still affected by the -1 to resistances. In battle it only affects the enemies, but it does on the worldmap.However, the AI like never uses world map attacks spells so its fine
3: only pylons inside borders cost maintenance (I know you already know about this)