If Hillary's VP list comes down to these five, which one should she choose?

[This account no longer in use.]

1. Heinrich
2. Warren
3. Kaine
4. Brown
5. Castro

Honestly, Heinrich and Warren are the only good choices here; Brown will inevitably be replaced by a Republican, while Kaine and Castro are as empty-suited as Marco Roboto.

[This account no longer in use.]

I am not seeing how Hillary selecting Elizabeth Warren would alienate anyone who wasn't already planning on voting against her. 

Probably the Moderate Heroic™ people who are deluded into the belief that Clinton is on a crusade against the 'loony left'.

[This account no longer in use.]

IMO, it goes:

Heinrich>Warren>Kaine>Brown>Castro. Warren might be replaced by, say, Richard Tisei. Worst case scenario, Tisei holds the seat in a special election and 2018 and then maybe is the sixtieth GOP Senator.

I'm sure Baker would pick Tisei theoretically, but the MA Democrats have a veto-proof majority in the legislature, and they could pass a law preventing Baker from choosing a Republican.