It sounds very likely that Martinez will get his wish this year with at least a 1 bike team, that is if Yamaha are going to give him the bike. He was willing to go to Kawasaki for a bike so we know he is serious. So at this point, I would say there is a good chance Bautista will be riding a Yammie.
If Tech3 drop Toesland which Brit will take his place in MotoGP? Sykes, Haslam, perhaps Leon Camier?
Simoncelli I would imagine is going to want a ride in MotoGP no matter what or will remain in the new Moto2 class as a 2nd choice, doubtful Aprilia can attract him to ride in WSBK. If one of the better teams doesn't pick him up, I'm certain the Italian backed Gresini team will take him and dump de Angelis.