Silver Season cards are an experiment. The problem with City, at least in the 4 years i've been involved in City Matters, is that they've been very risk averse. If there's been a problem, they've been reluctant to tackle it unless they've been 100% certain the proposed solution will work. And even then, they've sometimes got things badly wrong.
I believe the appointment of Roel de Vries from a successful, commercial, marketing-driven concern is hugely positive, as it seems he's encouraging them to approach things differently. There's a methodology called Agile, which is about forming a hypothesis, taking a risk, trying something and discarding it if it doesn't work. That what they seem to be doing now at City. It also means implementing smaller, incremental changes rather than a big-bang approach.
The problem we have is not that we can't sell tickets but that people who buy those tickets don't turn up, or pass on their tickets (either via Ticket Exchange or privately). And it's not the games against the other 'top six' clubs they don't turn up to. The problem is that TV demands means a game you thought you were ok for when the fixtures come out, might not be feasible once Sky & BT get started on divvying up the TV picks. So the 3pm Saturday kick off is now the exception rather than the rule. The vast majority of fans also used to live a bus ride, or two bus rides, from Maine Road whereas now many travel long distances.
It may be that the concept of a 19 game season ticket is only relevant for a minority so we have to find new ways of answering these problems. It may be that Silver Season tickets aren't the answer, in which case they'll be dropped. But it also may be that they're a godsend to some fans, wanting a cheaper way of watching us regularly.