oh and something else to add to my list.

if you want to appeal to both old school fans and the new kids to get them hooks which i suggest 15 should be the last.

Story line.

Two seperate stories on two disks.

Disk 1. have a story take place in a medieval high fantasy enviroment. and have a main villian who lets say looks to be killed by sucked into a crystal and shattered. make some story of involving the crystals and the job classes either going back to random battles with all the ATB blahs and blahs.

Disk 2. Seperate game where it is 10,000 years into the future. you can have pre rendered characters with cut scenes galore taking place in a futuristic city with guns, motorcycles and micheal bay esque explosions every few mins. make it japanese themed too does not mean ill play the disk. but that same villian from the first disk and other story will be the influence of this story. and the heros can tralalala about and have some sort of centralized love story that is ground breaking with music with 1 or two comic relief characters that act like total fools and a bad ass ally/ villian that does not care for the main character and gets them to act like an adult by calling them a fool and at some point they fight and the main character wins and the bad ass aknowledges the main characters power and follows him/ her still. blah blah blah. im sure SE can fill in the blanks.