My Moog (Mariner Doog) scenario is that, besides great pitching, they use chaos ball to squeak wins out until they are ready to add a significant bat at the trade deadline. We'll see some regression with Robles but Julio, Arozarena, Polanco, and Garver should have at least modest improvements in their numbers. I'm not sure what JP Crawford we'll get.
I'm not counting much on Haniger since he is injury prone and a year older. At best, we'll probably see something around .230 / .300 / .420 and 15 HRs.
I wish ownership wasn't self-constraining in terms of payroll. IMHO, the damage it has caused to their / the club's reputation is easily exceeds the $15 million they could have spent to add a pretty good bat.