Yeah the general consensus I'm seeing is pacing overall, which is something I wholeheartedly agree with. Some go on for too long and just add some ridiculous amounts of storyline padding (not sidequests). By the end of some JRPGs, I just want them to end.
Another thing I remembered I don't like about JRPGs is the overall cliche in story. The whole save the world, political intrigue, and religion themes start to drive me up the wall as well. Tales of is notorious for this I've seen.
Stereotypes in JRPGs are another annoyance. Damsels in distress, cookie cutter protagonists (Asbel Launt), etc.
Lastly, I forgot to mention sidequests. Some of these JRPGs have some of the most asinine side quests. ie) Picking up monkeys and pairing them with their soul mate based on their name -_-. It would be somewhat bearable if the gave a decent reward, but they usually never do.
Fixed camera is another SLIGHT... annoyance. I can deal with it overall though 
https://www.trueachievements.com/gamercards/SliferCynDelta.png%5B/IMG%5D">https://www.trueachievements.com/gamer/SliferCynDelta"><img src="https://www.trueachievements.com/gamercards/SliferCynDelta.png
