Mizter T wrote:

To be fair, extending the Poplar/ Bow Church line to Stratford Int'l
would have required some very expensive construction

From Stratford to the nearest end of the International station is only 300
metres. 100 seconds on a travelator has to be better than waiting 10 minutes
for a 30 second ride on a DLR train. Even if you were coming from Canning
Town on a DLR train, changing at Stratford for a 100 second travolator is
hardly a major hardship compared to spending another 30 seconds on the DLR.