I commented about this on reddit and you said to put in a ticket on GitHub so you don't forget to see how it works out in practice!

For reference, I think the Spell Circle should set its initial Look Vector to that of the Caster so that if you want a "fire and forget" spell that cares about the direction you are facing when you cast it, you can do that. For example, let's say you want a spell that creates an arch-shaped bridge in the direction you're facing, so you need to use a loopcast index to make the proper shape with the placed blocks but don't want to just have the spell run forever as a Loopcast nor want to have to hold the CAD the entire time. However, as it is, you have to stay facing the direction or the spell will pull your new look vector if you look away, suddenly drawing the bridge in some other direction... So if the spell can use the look vector of the Spell Circle instead, it will remain casting in that direction. Whereas you can still use your own look vector if you for some reason did want it to change as you look around.