I think there's a very good chance that Bungie has already planned to enable our Guardians to cross platform boundaries. #1 Destiny IP is planned to last a decade-plus. Obviously that is beyond the commercial lifespan of PS3 & Xbox 360. So Bungie must have anticipated players on those platforms needing to upgrade at some point. Forcing Guardians to stay on either PlayStation or XBox because of legacy decisions seems unnecessarily limiting. #2 Bungie has historically kept control of player stats & data and used that access to encourage & develop community. Locking players (& themselves) into console choices made in 2014 (or before) is counter to this trait. #3 At GDC last week, Bungie presented details of their armor customization architecture which clearly demonstrates "forward compatibility" as a design goal. If they are doing this for gear appearance and continuity, it seems obvious they'd do it for character records across platforms. I don't know if character migration will be present in the first Destiny title; but I'd say it's a certainty for Comet I and beyond.