I am pleased with the current difficulty of many things in XIV.
The monster ranking system in XI is an antiquated system that does not work in XIV. Even Tanaka said before the game launched that fighting several monsters gives a better feeling of heroism and adventure than fighting one mob over and over again. I find that his view on this is one of the incredibly RARE things I agree with. Fighting a single mob in the same spot over and over again, as in XI, is just mindless.
As Clair stated, leveling speed does not equal difficulty. Many XI fanatics cannot get this through their incredibly thick skulls. I have no idea why, but it simply doesn't mesh with their brains. We should be encouraging SE to make challenging content that doesn't involve sitting in the same camp, killing one mob at a time, over, and over, and over, and over, and over, simply because it is what you did in XI.
We also don't need a level cap increase. We don't need it in the next patch, we certainly don't need it before 2.0, and still even after 2.0 it should not happen. SE needs to focus on character progression content. Grinding, simply to grind, is not content. It's just monotony filled time wasting.
If you're at level 12, like your profile states, you really have just started to experience content outside of the "beginner" realm. In fact, you're still in it. I certainly don't try to engage 3 mobs on higher level levequests at the same time. I certainly cannot solo 5 level 50 mobs. If you could, you wouldn't see people trying to party for Natalan, or the new job quests, or literally anything.
If you wan't a difficulty increase, nothing is stopping you from killing monsters HIGHER than your level, so you get that same punishingly difficult and masochistic filled XI experience that you so desperately desire and want to impose on every other player.
Stop white knighting XI just because you cannot let it go.