So much for not having SEED representation (then again, having Code Geass R2's Jesus Kururugi hanging out with SEED Destiny's Jesus Yamato should make for some entertaining interplay, nevermind the people who are actually worth watching like Chirico, Heero, Sousuke, and Setsuna getting together to play poker, even Roger Smith wouldn't stand a chance against that must stoic, especially if R-Dorothy jumps in....oh goddammit).
Either way, Oh Hell YES!!! Having Tetsujin 28 (even 80s Gigantor is still incredibly oldskool), the VOTOMs' trashcans on wheels (i.e. Scopedogs), FMP's walkers (which invariably means Bonta-kun), Dai-Guard (the 9 to 5 everyday salaryman's giant robot of choice), Big O (the negotiator's clod hopper of choice), and Godmars (featuring the best of low budget animation) along side Rebuild of Eva (fuck the world, we have giant robots), Gunbuster (fuck the galaxy, we have giant robots), and at least up to Arc Gurren Lagann (fuck the universe, we have giant robots), not to mention everything in between. This just needs Xabungle (diesel powered robots) and something like Braiger (space car) plus squads like Z1 again (so that I can stick Gunbuster and somebody like Arc Gurren Lagann or Aquarion on any flight enabled unit as squad leader to get those two behemoths up in the air).
Of course, if Siliconera is to be believed, then this is just part 1 of Z3. So we probably wont get the 30 Armageddon Pileup that Alpha 3 had (at least until Z3-2).