The decline begins... Square Enix, heed my call.

[Seiryuukishi]

I can assure you that Square knows there are problems however they cannot commit all of their resources to a handful of objectives when they still have other things they are working on. It's called being counter-productive and while I whole-heartedly agree that certain things need to be addressed I find there are some tidbits which could be addressed in place of a thing or two you have suggested.
1: Leveling really only becomes an higher issue from about 36-50. This is going through the first time. The amount of quests to access of 'storyline' related content is slightly off balanced. And while fates and leves are in place to subsidize this it kind of feels like heck yeah to heck no. In some aspects they're trying to 'make' you take from every facet of what the game provides but its a built in buffer of area over congestion. If everyone was in Coerthas and Mor Dhona within a week's time you'd be unable to process a rock much less a fate.