I haven't finished the game yet (still in Pulse), but I've got to say, FFXIII is the single most mentally exhausting video game I've ever played. I know the characters are on the run through almost the entirety of the game and the structure adds to this feeling, but it's NOT pleasant in the least. Yeah, the graphics are beautiful, the music is beautiful, the monsters are interesting... but the player doesn't have any time to admire any of these things before they're whisked away on the run again! Because the game never slows down, we never get a feel for the characters outside of a highly emotional state because of the desperate situation they're in. And then, everything screeches to a halt to be replaced by - a grindfest, presumably before the final battle.
It also doesn't help that the new trend in Japanese story-telling is in non-chronological snippets and purposefully witholding crucial plot information from the viewer. True, the datalogue did help with regards to the 13 days flashbacks, but should we even have to go through a series of randomly-timed, random-ordered flashbacks in the first place? The rest of the datalogue aside from the instruction manual was a total waste of space. I mean what's the use of a beastiary if we're never going to encounter any of the monsters we've passed up ever again?
I heard when they were developing the battle system that it was supposed to be cinematic? Maybe it was,but I couldn't tell because if I took my eyes off of my health bar for more than five seconds then I would be dead before I even realized it (which isn't even an exaggeration, because the other two members of the party continue to move around even though they're completely useless).
And as for story elements not matching up with gameplay, I did a facepalm when Lightning and Hope looked like they were supposed to be sneaking around the Coccoon guards to get to the pipes, when actually you have to fight every one of them you come across just to get the minimum CP that keeps the characters trucking through the linear portion of the story.
Also, jumping over obstacles without requiring the player to actually tell their character to jump. -_-'
How many years has it been since FFX? And I'm still waiting for characters that I actually give a damn about (excepting that brief moment of respite in Balthier and Evil Cid

).
I will finished this game though, oh, I will... And then I'll look for a copy of FFVI.