That's a pretty good analysis, Nakauri!
But then... what would Sniper Training affect? MM's state right now feels really sorry, because we only have Aimed Shot and Chimaera Shot as pure damage abilities. Steady Shot hits like a wet noodle and is used to build up focus. Kill Shot can't be used at will. Considering that, I'd think Sniper Training would effect only Aimed Shot and Steady Shot, with Chimaera and Kill Shot not being modified by it. MM lacks some resource to pool and release at the right times. It also lacks an instant cheap ability to cast when we can't afford to stop and cast Aimed Shot.
MM feels very incomplete right now.