Depends on which Hosmer shows up.
I do think he's an upgrade from Moreland, but he's really not a 4-5 slot hitter.
Hosmer since his rookie year (all 547+ PAs)
OPS HR
.799 19
.663 14
.801 17
.716 0
.822 18
.761 25
.910 24 (so far)
If he hits .910, which certainly could be an outlier, he'd be more than a slight upgrade from Moreland. If he hits .668, .716, or even .761, then no, he wouldn't be that helpful.
If we're going by just 2017 numbers, then we might as well just take a flyer on Morrison (.884 36), Duda (.874 29) or Alonso (.858 25) . They might take one year deals and cost much less than Hosmer. Heck, Reynolds has 29 HRs (.858).
To me, I want a better gamble than these guys.