Bankruptcy is a terrible idea. First off, the City of Boston is doing fine. And the MBTA declaring bankruptcy would just increase costs in the long term as borrowing costs would go up. All that's needed is more state funding, and it really wouldn't take that much.
I never said bankruptcy was a good idea - I said it was the best of several bad ones. (As an aside, I'd argue that the state of Boston infrastructure outside of the T, the ever-creeping-upward tolls on the Pike which has become something of a load-bearing revenue source and the amount of money we've sunken into the Big Dig are all great indicators that the city of Boston is not, in fact, doing fine.)
Would the cost of borrowing money go up in the long term? Yes it would.
Would the organization in charge of Boston's subway network have nothing in common with the pre-bankruptcy MBTA other than the name? Yes it would.
And is that necessary? It just might be.
Declaring bankruptcy lets us shift or discharge a lot of the MBTA's existing debt. Like as not, any unfortunate lending deals the MBTA is currently locked into all get wiped off the board, and whatever Big Dig mitigation debt doesn't get discharged is probably shifted back onto the the Commonwealth.
Bankruptcy is also the most direct way to toss the MBTA's existing operating charter - you know, the one that says the MBTA can't serve anybody outside of its operating district and also fails to set its operating district as 'the Commonwealth of Massachusetts.' That charter needs to be discarded and rewritten for that reason alone.
Sending the MBTA more state aid is great, and I'm all for that, and I'd like to see that, but that can also be handled in bankruptcy and the ensuing reorganization. More state aid on its own treats the symptoms without solving the problem - and I'm sorry, but I don't see any way to solve the problem without some kind of drastic measure. And to be frank, bankruptcy is the best possible drastic measure we can take.