There's no golden patch cause theres no fast and easy way to fix the cluster@#%^ of an engine/server software the game runs on. Which is the reason as to why we haven't gotten many features we've been hoping for.
While I don't know anything besides what the devs and Yoshida said about their engine and their server setup, I think this is a valid point.
If other MMOs can deliver updates/patches with quite an ammount of changes and content pretty frequently, why can't they do in FFXIV. I'm sure it's not because they aren't working hard enough on creating all the stuff we want.
They can just work with what they have, and if the engine or servers can't handle what the devs want to do, they either have to modify the engine/servers or whatever they want to implement.
What other reason could there be for not implementing a mail system by now? The explanation of player communication is just an excuse. There is a mail system in FFXI and the community is more communicative than FFXIV's.
I, too, don't think this will be a "golden patch" that fixes everything, but I'm sure it will breath new life into the game.
My biggest worries are the dungeons and the new job system.
If the dungeons are too easy or loaded with obviously copy/pasted terrain and don't give you a feeling of accomplishment and adventure this would be pretty bad and drive alot of players away.
Same with the job system.
If a job really has the same rank as your corresponding class it's not more than a version of that class with a limited selection of your standard skills and a couple of exclusive skills. Let's hope the quest for these skills are at least as good as the class quests.
My hopes for this patch are high and I'm sure all players expect some big and positive changes.
Let's just hope it will come close to that legendary, shiny "golden patch".