The major reason is the NIMBYS down at East Junction. They have been
hounding the MBTA to move out and find another spot for years. Like the
situation in Bradford on the Northside, its been an ongoing battle royal.
If service expands to TF Green environs or Warwick, it probably makes
sense to be closer to the starting point of the trips instead of an even
longer deadhead move. But the prime motivating factor here is the
NIMBYS, no doubt about it.
D