See, the thing is, at the micro level, all we have are opinions.

For example, my own current happiness rating with the game is probably around an 8.5 or a 9. I have a lot of fun playing PLD, SCH, and RDM. Heck, I've actually found myself enjoying leveling DRG 90-100 when I usually just do that class for the sake of seeing the melee DPS role quest. So for me, jobs and encounters are in a great place.

The graphics update for me is a whole lot of nothing. Graphics aren't really something that particularly draws me in (or pushes me away, for that matter). Gameplay, story, and music are the big ones to me.

And the DT MSQ? I'd rate it a solid 8, and given that it doesn't have much to build on, the highest I would reasonably expect possible would be a 9. (My original thought on this was 7 out of 8, but Living Memory I enjoyed enough I had to step the rating and the max up one.) There's a few things here and there that underwhelmed, but overall I very much enjoyed the story. And the raid series has started off great, too.

Now, if we truly want to talk "state of the game", what we need to do is look at the macro level. What is the playerbase as a whole doing. In-game, hunt trains are filled throughout the week, there's still FATE farming groups going around DT on a daily basis, and when I checked a couple nights ago on Aether there were just over 150 high-end groups recruiting in PF. We also have the only large-scale data available through Steam charts, and they show the one-month retention rate for DT is right on par with every other expansion, and the average number of people logging in daily is currently among the highest its ever been, with the only exceptions being the release month of DT itself and the brief super-spike we saw from the "WoW exodus" a few years back. But the population is 3-4x higher than it was during the HW and SB days, and about 50% higher than it was during ShB, with HW and ShB often being viewed as top-tier expansions. Point is - the "state of the game" is very healthy right now.

It's possible it is just time for you to move on. The average person today will work ~12 different jobs during their career, changing them about every 4 years. It's a natural human need for change. Some of us have been playing this game for ~10 years now. For some of us, it's just natural to need a change of scenery.