I need to add 1.5cm to my gonions (implant design)

[monecel]

I did bone scans and to decrease my gonial angle from a brutal 127 to 115 degrees which is more in the ideal, I need to increase my ramus height by 1.5cm. This would be pretty intense on the masseter muscles and I'm not sure it's possible without implant show or some other symptom. These would be custom implants with sufficient gonial rounding (no sharp corners) but the height may still cause issues.

Any thoughts for ways around potential issues?