Do you have an example or picture showing what you are thinking with regards to the front dovetail? Most windage front sights have graduations already or am I missing something? And along those sample lines most front sights for long range rifles included a spirit level so why would you need a rear level? Which would be most inconvenient and difficult to focus on when your focusing on the front sight. Of course anything is possible and everyone has their own preferences.
My first thought was also scope mounts but I have discounted that because the dovetails are not very robust
