Hell yeah, that sounds great! I just wrote this for fun so steal it verbatim if that works for you. I had a few ideas for how this might work but have been running Delta Green and rolling lots of d100's, that ended up feeling just right. Felt like the right way to replace GLOG Doom's as well since I wanted the rules to remain classless. The Cairn GLOG magic rules were a big inspiration as well.
If you end up using something like it, let me know!