Yes but we don't see a lot of Double Rider actions in those looks before the last few episodes. It will be a little bit odd to have them captured together.
Rider 1 got that look in episode 53, IIRC, which is a little past the halfway point of the show. Rider 2 returned with his new look in episode 72. I don't think it's very odd. It'd be weirder to feature Rider 1 with his final design and Rider 2 with his original look, considering how they never fought together like that.
Shocker's Great Leader and his executives sitting around the table and Terror Dopant is one of them?
Hm... I saw an almost complete list of the monsters on the picture on 2ch:
Sitting (from left to right)
Leo Imagin (Den-O)
N Gamio Zeda (Decade/Kuuga)
General Shadow (Stronger)
Kerberos (Blade)
Apollogeist (Decade/X)
Terror Dopant (Double)
General Jark (RX)
Darom (Black)
Arc Orphenoc (Faiz)
Kimil Yumu - 10 Faces Demon (Decade/Amazon)
Standing
Octopus Imagin (Den-O)
Ra Dorudo Gu (Kuuga)
Poison Lizard man (Kamen Rider)
Jaguar Man (Kamen Rider)
Giraffa Undead (Blade)
Doras (ZO)
Shuvarian (Decade/Black RX)
Tigeroid (ZX)
Shadow Moon (well, actually, whoever made the list said it was Dummy Dopant, but it looks like Shadow Moon to me)
Jaguar Lord (Agito)
Gulthunder (Ryuuki)
Zanjioh (Kamen Rider) - looking at the picture, I'm not sure about this one
No villains from V3, Skyrider, Super-1, Shin, J, Hibiki, Kabuto, Kiva and OOO. Although some monsters from V3 were listed in the second teaser, so some might show up in the fighting scenes themselves even if they have no representative in the Shocker council.