The Taillon injury forced our best stretch reliever into the rotation, the Steele injury took the next guy who could soak up innings and forced him into the rotation. So now you lose your two best long relief guys AND you have two rotation spots filled with (the same) guys who aren't fully stretched out). And then our best starter got shut down after 4 dominant innings because April weather sucks. You can't really problem solve for something like this in one offseason, and there are too many restrictions on number of pitchers you can carry, options, 40 man roster, etc to just churn through a bunch of AAA journeyman starts.
Everyone hates their bullpens. Last year we just blamed the manager instead.