Me and my wife, both playing mmo's for 15 years, played in the betas and got upto brayflox. From what we saw till then everything was sort of balanced, difficulty scaled up nicely, brayflox was abit harder but farmable using the duty finder.
Now at launch we are currently level 46 WAR/WHM and tried all the instance content upto that level including Qarn,Cutters,Stone Vigil and Dzemael. From what i can tell difficulty bounces upwars to sky limits from Stone Vigil and Dzemael making it almost impossible to do a proper run using the Duty Finder.
These higher level instances require a coordination and experience that is just too much for random people you pug with. If you are lucky and have experienced players join you it might be a good run but 95% of the times its a disaster.
In the end its not even worth it, the equipment you get there(which is also scarce) will get replaced in a matter of hours with the practically free lvl 50 gear you get from quests and the exp sucks! 1 hour of Dzemael run maybe 30% exp while 1 hour spam fating coerthas nets you 1 and a half levels. Its actually funny making literally 10k exp in 5 seconds fating while to make the same ammount in a dungeon you need to break your fingers.
Now i get the whole hard content is good mentallity but for something like this to work properly you need to reward the "hard" and not making it obsolete. As it stands now pre-50 instances are a total joke, they offer nothing worthwile and they are NOT fun because of that.
Making matters worse the duty finder is lacking serious features, for example lets say i win the lottery and get a decent group to farm an instance with, i cant even keep in touch or re-run the same instance together, of course not. I will end up with another newbie group wiping my @ss on the floor till they all know the mechanics of the dungeon.
For me the golden solution to this problem would be to "ALLOW" cross server grouping/ friendlisting or at least the option to re-run the same content with the same group when you finish the instance. Moreover the low level loot needs to get buffed, noone will farm a level 40 instance 50 times to get geared up. 10 stone vigil runs and i still got a white weapon from a trash quest which i changed for a higher level trash quest weapon.
I would love to level up all my jobs using instances cause they are cool and i like a good challenge, but please S/E make it worthwile, give us the proper tools to do so. Nerfing the difficulty is a bad solution instead reward us with better exp/items/gil.