Have we actually seen all the sounds it can make? I haven't watched too many of the videos. There are still A LOT of cards planned for release, the Final Ride for Kuuga and Ryuki are in Ganbaride wave 2 as well as being with the Final Form Ride figures.
I was thinking, I hope they planned out what attacks of the past Riders Decade can use, or otherwise, it'd be kind of impossible to have every sound effect. I mean like, if there are 3-4 attacks per Rider, plus the Final Rides and the Form Rides, I can see that. If he can do like, all of Hibiki's variant moves though... I hope to hell they told Bandai in advance to put that all in.