ASW – Alternative hero leveling.

Quite reasonable arguments.

Regarding Summoning – in WGE, the teleport is located in the Summoning skill (and it works on enemies there), so if such a transfer option is being considered, it can be added to the Summoning school (and the Celestial Shield can be returned to Light – there you have a perk). There is already a mechanic for pushing enemies on the scale in Summoning (Wasps – they are real, not just status effects), albeit in the opposite direction, and also as an additional effect.

Banishment is most logically placed in Anti-Summoning.

The main thing is that nothing has changed in the connections from the build I suggested :D
I don't like writing a lot, but there's nothing I can do about it: until I explain to someone why I did things this way, they will consider it wrong :)

Runic Shield is specifically a Dwarven spell. It would be illogical not to give a native magic skill, such as Summoning, and instead give a slight bonus to the shield in it. That's why it already deserved to be moved to Light (probably, it was originally intended to be there).
But there are other problems:
1) This is not WGE, where the value of each unit of speed is significantly important – the shield is much more valuable here than the teleport (a simple exchange of spells won't work).
2) It will be necessary to touch upon changing spells, which is a bit broader than the mod's tasks.