Super Hero Wars Kamen Rider vs. Super Sentai (Film)/WMG

This movie will be epic
Well duh, but until it happens this this is a guess.

Kikaider, Kikaider 01, Inazuman, and Kaiketsu Zubat will appear in this movie
They appeared in the Kamen Rider 40th anniversary movie.

Metal Heroes will appear in this movie
Gavan appeared in a Gokaiger movie.

Takeru will appear in this movie.
He's had history with Decade before, so it wouldn't come across as much of a surprise to see him, really.

Why 240 heroes?
Excluding the extra Riders, there are only 27 Kamen Riders. If you do include the extra Riders, there are a lot more than 40 of them. So this spot on the WMG page is for the theories you can come up with on how Toei is even going to actually pull off 240 heroes.
 * While there are definitely a lot more Kamen Riders than just 40, it's possible that those that were just in a movie/1-2 episodes/villain role were cut. 1-hit wonders and evil Rangers didn't make it into Super Sentai's 199, so neither will those equivalents of Kamen Rider make into their 40. I believe they're only going to count main Riders (currently 28, including Fourze), and main secondary Riders only (such as G3, Gatack, Diend, Meteor, Birth, etc.). I believe there's only 12 Secondary Riders, given that they became a tradition after Agito.
 * Eh... there may be exceptions to that rule, like Odin possibly showing up alongside Ryuki and Knight, or Lengale and Challice, as well as Blade and Garren, showing up to help.

The Gokaigers and Go-Busters will have no interaction with each other in this movie.
Cause they'll want to save that for the vs. special in January.
 * Jossed already: there's an image of the Gokaigers stepping in to help the Go-Busters against Decade.

After this movie there will be another Super Hero Taisen, with Metal Heroes joining Sentai and Kamen Rider.
There are roughly 50 Metal Heroes, add that to the 240, and take in a few of whatever new heroes are coming up in Sentai and Kamen Rider, and we could get 300.

Both Captain Marvelous and Tsukasa Kadoya will be Brainwashed and Crazy

 * They would probably be under the control of both the Black Cross King and The Great Leader.