These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Kamen Rider X Super Sentai Super Hero Taisen
Big Lipped Alligator Moment: During the trip back to the Goranger era, Baseball Mask shows up yet again, only to be unceremoniously killed off in one shot. Besides Joe and Don recognizing him, he never ends up having any importance at all.
Broken Base: Arguably the most controversial toku movie so far, with some people liking it for its action and seeing Sentai and Riders together, and others hating it for its lackluster and/or mind-screwy plot (depending on who you ask) and not exploiting the crossover to its fullest beyond the final scene.
Hilarious in Hindsight: So Marvelous is after the Best Treasure of the Kamen Rider 'verse, huh? Obviously, trying to find the Second-Greatest Treasure in the heart of the Zangyack Empire didn't work out for him. Or maybe it did and he just wanted more treasure.
Sometime after the movie's announcement, the producer mentioned they could do more in a crossover movie than they could in a series because "Rider is science, Sentai is magic." Well, now Rider is magic, too. And one Sentai had science lessons at the end of some eps and one Omake.
Made even funnier considering the first series to run alongside Wizard is one of Sentai's technology driven series and not a magical based one. (Although neither Rider or Sentai's "science" would be worthy of a Science Channel special)
Another mecha has already beaten Go-Buster-Oh to having a "Rider Kick", let alone a drill-infused one.
At the end of the movie, Fourze declares that he makes it his mission to befriend every single superhero in the universe. Considering 2012 saw the boom of a large number of superhero movies...
Narm: no one can really take Tsukasa's unmorphed scenes seriously because of his new hairstyle, which earned him the nickname of "Granny Tsukasa".
They Wasted a Perfectly Good Plot: More of a scene than a plot point. It would have been VERY COOL to see the Gokaigers fighting in OOO's forms rather than just using the keys to fuel Gokai Galleon Buster.
They could have also shown what was going on with Fourze and the Go-Busters during the whole debacle with the Gokaigers. Hell, some additional interaction between the Gokaigers and the Go-Busters would have been nice (though of course, that'd make the traditional Go-Busters vs. Gokaiger redundant, which helps explain why interactions are at the bare minimal).