Here's what would work well at that location:
1)Ground floor: cafe+101st TPL branch
2)2nd-4th floors: new alternative public high school for at risk youth
2)5th-7th floors: new welfare etc offices to replace those dated ones at Wellesley E and Church
3)8th-10th floors: public medical/dental etc offices
4)11th-50th floors: TCHC housing
That would really piss off those Bay St snotty condo owners the most, and we all know gov't loves doing that!
Why it won't happen: the gov't lacks common sense! They want to make life harder for the poor, so scatter seemingly related services around the city.