If people rush at this then it is likely
to go wrong with ticket selling staff and passengers being the poor
people who will deal with the consequences of ticket systems not
working, cards not working, ticket gates and validators doing the wrong
thing and passengers being mischarged. It is all too easy to do and
that's before you get to the issues about revenue assumptions in
franchise bids, running costs, installation, commission on sales,
provision of usage information, system security, training and education
and procurement issues for the equipment and whether compatibility can
actually be achieved.

I think the frustration is around the fact that Oyster has been around
for years now and they are only just starting to work it out. Rushing
it would have been bringing it in 3 or so years ago; by now SER
passengers have a right to the integrated system.