In my opinion endgame should start at R1. You should be contributing to the world in some way the moment you set foot in the gameworld. Anything other than that is pointless crap.
I don't believe in passively digesting content and as a matter of fact I think there should be no levels at all. But since this is a FF game, I will learn to live with some degree of RPG elements.
50 ranks is bad enough though. More than that is just being excessive.
The barrier to entry to new content should be skill, not how many months you've grinded (ground?). And if SE cannot implement a system that differentiates skill-levels enough then they have failed in combat design. Again.
And oh no - you have to carry around 5 weapons. Poor you. Sorry the world isn't the perfect little fairy tale you always wanted it to be. I'd rather carry around multiple weapons than have to grind ten times as much as is humanly tolerable, only to have everything be obsolete anyway.
That isn't a good system. That is a futile system.