Even if they're mostly just suits in fighting scenes, like in RX, I hope the Showa Riders get a better final battle this time. Their performance in RX was generally just bad after their debut episode.
I know the other Riders shouldn't overshadow Decade, but hopefully Decade won't make everyone else seem utterly useless, unlike RX.
Oh, well, somehow, I still enjoyed the RX team up, if only because it was actually integrated into the plot. So, as long as the Riders actually are part of the movie, unlike the Red Rangers in VS Super Sentai, I'll be somewhat satisfied.