Great stuff, Matthew. I recently discovered your site, which is fantastic.
The analyis is actually not too encouraging in my mind, but I'm not an expert on these things. It looks like he makes great decisions on what to swing at (so can't really improve on that dimension), but he just doesn't adjust his swing enough from pitch to pitch to make great contact. Grounders to first, make it hard to leg out ground balls, and fly to left make it hard to stretch doubles to triples.
I am curious if you know how often he bunts to get on base. That would seem a good strategy. It would also keep the infielders (and pitcher) honest. Together with his speed, bring the infielders in a bit, and more of those chopping ground balls get through. If he's already done with bunts, it's one less thing to improve upon though.
It would be great if Chourio, Frelick, and Mitchell all get off to a hot start. If so I'd look at trading Adames and Mitchell before the break. Our ETA for a WS is at least a year or two away in any case. Move Ortiz to short. If Frelick sticks at the hot corner great, but otherwise we can move him to the outfield, and Ortiz to shortstop. I think Wilken will be a Brewer by next year. If he can cover 3rd great, but otherwise he's DH.