restoring this building's proper dignity would go along way to make it more likeable.
get rid of the parking lot, add some cafe's, some seating.... there's no reason this couldn't be a nice successful plaza.
It would also give people a reason to walk or sit on those awesome staircases and finally give this building life. Then again, i wouldn't object to a nice triangular (or whatever shape that parcel is) building there either.
I should add that parking lot to the "things i hate about boston" thread...