At this point, with it's track record, I'd rather they take time to release proper content then to rush it out and have half of it broken. They've also been doing several server maintenance which I think has delayed some of the content development. I'm sure SE could release smaller instances more often, but then people would blow through them in a week or two and complain that it's not enough.
Hell, they announced King Moogle and people are already complaining gear isn't on par with other things so they won't bother. Like I said, it doesn't matter what they do anymore, how fast, how slow they release something, the length, difficulty, someone will complain. I've played several other MMO's, and the ones that update frequently are lackluster at best, and the ones that take their time, well it's never fast enough.
Class balancing is coming, but it's not something you just do over night. There has to be actual thought involved, without trying to break certain aspect of each job too much. Some of it might even involved re-hauling content cause of the way bosses act right now, they do next to nothing to ranged DPS. It's all on the melee to get the hell out of the way and limit their DPS. At some point, you just got to play what's there, and take things as they come. You don't like it? Unsub and come back at a later time, no one is forcing you to stick around cause you feel there's not enough content at the current time. I'm sure SE is reading much of the constructive criticism it receives, but it can't fix it over night or even in a month.
But, but, but, but it's 12$ a month! Content should roll out faster! Unfortunately, as a company they're out to make money. Yes they need to please you, the customer, but they also have to turn a profit and salary a whole whack of people. They hire too many people, then they don't make profit. I really need to stop ranting, at this point what I've done with EVERY MMO that had something I really didn't like? I left, unsubbed and walked away. That's it, that's all. Like I said earlier, you like the game but don't feel content is coming fast enough? Then unsub until it does, if you've truly done everything it has to offer at this point, what's the point in paying and not playing?