I don't get how people are think that Decade will make it into Samurai.
Because it was said that Saban also secured the rights to the Shinkenger/Decade Crossover footage?
There's a possibility that Saban wouldn't use the sentai/kr crossever footage at all, so I'm not really expecting a crossover. Unless they make Decade into some kind of an alien superhero who is not a kamen rider.
Obviously a Dragon Knight team-up is too unfeasible, and an RPM team-up would bring up way too many difficulties regarding RPM's place in the PRU, and that's even if they WANTED to do it.
I highly doubt this season is going to spend too much time on reconciling the PRU, and given the theme, I'm not sure this is the best season to do so anyway.
It should be a fresh start. No team ups or anything and have a team up in 2012 for the Gosei adaption and PRS. We don't need an RPM team up, that team will already be 2 years done by the time PRS is full throttle.