BioWare introduced the idea of allowing your save file to carry over from character to character in order to introduce past decision making to influence situations taking place within the sequel. According to Famitsu magazine in Japan, Square-Enix is contemplating the same type of game design decision, but has not made a concrete decision.
The development team says they’d like to introduce a surprise to those players who have purchased and played both games, but give no indication as to what that surprise could ultimately be. The article also reveals that you can expect Final Fantasy XIII-2 to take a much darker path than the original and to prepare for an evolved battle system from its predecessor.
To be honest, it would be pretty cool if the save reward introduced character weapons of the past to be utilized in FFXIII-2. What would you guys like to see as a Save Reward?