It was only two days long once for a good reason. I attended only for the Sunday the time when it was two days and pretty much no one turned up, it was a nightmare. I can understand why MCM are yet to take that chance again because with the amount of people that did turn up that day, they most likely lost a lot of money through it. And I mean a lot. If you'd have been there, you'd understand haha. The place was pretty much empty!
Since Midlands first started the numbers have been increasing quite considerably and it would be nice to see it go back to two days again... but you have to think of the practicality behind that. If MCM were considering putting it back to a two day event again, they'd be holding out for the numbers being a significant amount that could justify their spending for a second day. At the moment I don't see it happening because I get the feeling they won't want to take the chance of having the disaster of so few people turning up like what happened the first time around.
Could happen one day. Until then, you just have to hope.