So I think I've made this post before, sometime during the Dombrowski era, but the Tigers have been a pitching first team ever since DD and even if Harris has a mind to change that, he hasn't done much to do it yet - and here is the problem: If your minor leagues are full of young almost ready hitters, you can bring them up, move them in and out of the lineup, play them part time while retaining a veteran, and build their trade appeal - which you can then use to go get the pitching prospects you may lack. But if you are building a huge stable of starting pitchers, which is certainly a great thing to do, you still have the problem that all but 5 of them are stuck in the minors. You really can't bring guys up to validate their big league potential without creating rotation havoc, so they don't build the kind of trade value you need to get the top hitting prospects you lack.
I think once way back in the day I heard DD say he liked drafting pitchers because the metrics were more reliable-projectable, and I think that is certainly true. Spin, velo and strike rates are what they are on any diamond at any level. Of course that is only putting aside the greater injury risk for pitchers which probably negates most/all of that advantage, but one can still see the logic. But the problem remains that it's still not easy to leverage excess MiLB pitching into MLB hitting, so if you can't draft hitters, you are still up the creek - like the Tigers.