Borgo Pass is from NY and I know that they're looking to do some shows out of state, you could try them...
I also would definitely recommend Hessian from Maine, they're always up for traveling and they're a lot of fun to play with.
Not sure whether bands from CT, RI, or NH are sufficiently non-local for what you're seeking, or I'd list a bunch more, but those are the bands that come to mind off the top of my head. Are you looking for a specific sub-genre?
I'm not looking for a specific genre. I want to mix it up so the more interesting a band sounds the better. I feel a friday night at the Midway deserves something different for a Boston show.