For me personally, I want Sony to price it so they don't lose money on the hardware. If it ends up costing a $130 for a move, camera, and sub controller...so be it. If the games are of high quality the expense can be justified.
But I would like to see NEW game that push motion controls farther. Most of us have played Wii Sports and a variety of party games at this point. Give us something new. And please don't tack on or focus to heavily on adding motion controls to sequels of current games. I love Killzone 2 and Resistance. I would hate to see them dragged down because motion controls become front and center for their next iterations.
I would launch in early September to give 3 months of advertising and demo kiosk before the holiday rush. They need to have a move set up where ever possible.