Probably not the place for it, but I think Baltimore has had an absolutely atrocious off-season at least to this point. I'd probably give them an F, maybe a D- if I looked closer and wanted to be generous.
Rutschman and Henderson are studs, no doubt about it. Westburg might be, but the jury is still out there. Cowser is a good player, no doubt, but he's more like an Abreu type to me than someone you construct a line up around and fear as an opposing manager. Urias has always been a part time player, O'Hearn is their own DH that can't hit same handed pitching, and then you have a lot of unknowns. O'Neill will probably have a 115OPS+ for them, but it'll be in like 65 games and then he'll be hurt again. They lost Burnes and have kind of gone the "Chaim Bloom" route in replacing him - which I am not a fan of.
Maybe the turn this all on its ear by trading for Logan Gilbert and then it's a different story, but as of now, I think they've had a crummy off-season.
I think as is, I'd peg them for a step back to around 88 wins (and as is, I'm thinking the Sox get 86). If Boston added a decent back up C and another high leverage relief pitcher, I'd bump that to 87 wins. If Boston adds a core bat and a high leverage relief pitcher, I think they go up to 90 and Baltimore probably falls down to 87 in that scenario.
Boston has had a very good off-season (B for me right now) and Baltimore has had an awful one.