I highly doubt Boston does anything major. They're retooling internally. They just shed all their salary. Shell shock probably keeps them quiet. Baltimore? Who do they have even have that have proven anything before this year?
Drabek, Hutchinson and Morrow all went down in a matter of a week.
Jays pitching was fine until injuries set in. Romero was still winning at that point too (even though still not pitching great).
They have options for 5 (Cecil, Rogers, Villanueva, Happ, etc) or they may look externally
Red Sox pitching was terrible last year, pretty much the only positive in the starting rotation was Buchholz. I'm interested to see what moves are made as far as bringing in new guys, but I don't have high expectations.
You can win the AL East with average pitching if you knock the shit out of the baseball. Yankees starters weren't that great at all. Boston is in shambles. Baltimore defied pretty much everything and made the playoffs. Rays seem like the team in the best shape going into next season to me. Now the Blue Jays just raised them all.
Obviously games aren't played on paper so who the fuck knows what will actually happen.