Canario, outside of a single run in AA-AAA, has been a strikeout machine and reverted back into one last year. You can have good feeling about him, but nothing in his profile suggests he's such a good player the Cubs should be forcing his way through. He might be useful, but the reality is, he's more than likely not going to be a worthwhile starting player (as most prospects are). His profile is riskier than most.
"Jag around with Brown"? I mean, he made it to Iowa very quickly last year, his age 23, then got hurt. Thaw, you're doing that thing you do where you just randomly get overly impatient on a prospect. Ben Brown just barely turned 24. Stop acting like he's 29. If he doesn't improve his control in AAA, he's not an MLB arm regardless.