They also compared the old tradition of Rider team ups with OOO's and Double's team up, using the original series, V3 and Stronger as examples. I really hope these crossovers end up in continuity and the following series add to them, like in the crossovers they used for comparison there, rather than just staying with Sentai-like current series + previous ones.
It'd be nice to have something between All Riders crossovers and current series + immediately previous one crossovers. I guess OOO's summer movie might be a good chance to start that, featuring a 3 way team up with OOO, Double and the next Rider, if they really want to build up these crossovers similarly to the Showa ones.