You know what? I pretty much agree with everything you said. I would also add 'annoying end-game content' which basically meant:

1) max out sphere grid
2) to achieve step 1, grind at the monster arena forever, farming spheres
3) once done, defeat the dark aeons. Maybe defeat Penance if you really want

That's it. I don't mind doing a bit of the monster arena stuff, but ugh you have to do it for so damn long.