FF1: Not much storyline and no character development. In any case, it was a nice change from the following Final Fantasies whose storylines are MADE to confuse the player.

FF2: No levels, and more bad character development. In my opinion, the WORST ff ever! (No, I haven't played X-2 yet)

FF4: "Let's kill off all the characters and bring them back to life, then bring in a new main enemy halfway through the game and when they defeat him they all become royalty!" Wtf??!

FF5: Ex-Death. The most annoying villain ever.

FF7: Cloud's past. "I lived in Nibelheim and it burned down but no-one remembers anything! But wait, no, it can't be true, because Hojo created me after Sephy died! But, wait, I KILLED Sephy! Whaddya know, I really DID grow up in Nibelheim, but everything else I made up about my life!" I like Cloud, but the whole storyline in FF7 was ass-numbingly confusing.

FF8: The fact that all of a sudden GF's make you forget things is just annoying. The characters don't even think anything's wrong with them even though they are complete amnesia-cases!