People are missing the point a bit.
Yes, match day tickets are.now cheaper, and that could lead to fans paying less for matches over a Season, than a season ticket holder?(someone will have to crunch the numbers) Could? But you are not guaranteed a ticket for every match, regardless of the cheaper price. With a season ticket you are guaranteed a ticket for every match. Given that scenario, I would always go for a possible more expensive season ticket.
Personally I don't mind paying more for a season ticket, if that's how it works out? I'm just happy match day ticket prices have come down, are more affordable, meaning more City fans can watch City.