A medial forefoot wedge is nothing new! But they work.
Still, the fundamental issue is the shoes. A flexible shoe with a toebox being the widespart of the shoe (hard to find), no heel elevation (even harder to find), and toes that don't point upwards will do much more than any orthotic. Then you can add a medial forefoot wedge, metatarsal pad, hindfoot wedge, and a heel lift(if there is a leg length discrepancy).
If anyone knows of a super low-profile orthotic that can be customized with these features and doesn't require plaster casting....let me know.