Your D10 modifications are a distinct improvement on the original. I never liked the original underlever - it looked like an afterthought they just threw on. That sidelever is sweet. What did the factory think of them?
I got to thinking about the ideal small-medium single shot caliber, and every one I dreamed up had already been invented. I thought I had invented the .303 necked down to 6mm, only to discover it was already called the 6mm Musgrave.
(Plain old .30-30 wouldn't be bad - you could really punch it up in a strong action and use some of those modern pointy bullets.)
