I had proposed a modified aura system, I'm interested in trying it out, but certainly don't care if someone doesn't want to do it.
https://forum.atlas-games.com/t/auras-and-their-bonuses/6847/1
It's probably not well fleshed out in that thread, but what I'd intended is that the magnitude Aura 3 adds 3 to lab totals, as normal, but for casting totals it adds 6. Look at The Fixer's alteration to my original suggestion later on in that thread, where he progresses the bonuses for spell casting like Arts scores, not my original proposal that progresses in multiples of five. This makes an aura +3 pretty desirable if it can be found, and even +2 is better than nothing. Anything higher than that is extremely powerful. My goal was to come up with an explanation of why someone would study in a magic aura, the addition to the lab total is relatively small. But if magic is vastly easier to work, one can experiment more easily to come up with ways to cast spells when it isn't so easy to work. Differentiating a casting total bonus and a lab total bonus from the aura establishes a better "story" connection between easier to cast magic and the lab total, which really isn't well discussed. In higher auras it could certainly be possible to work magic you'd never dream of working anywhere else, which also has some interesting story possibilities, especially for the one who is investigating auras.