Well Star Ocean 2 didn't really have a great storyline. The only part of the entire storyline I found interesting was (SPOILER)Dr. Lantis' background and the origins of the 10 Wise Men.

The entire second disc was a giant fetch quest with the four fields and all. What kept me going on that game was the 255 levels, awesome battle system, skill system, bonus dungeon, and super bosses. I am in no way supporting games that sacrifice storyline for gameplay when I say this, but I do think Star Ocean is one of the rare exceptions that I enjoy.