Do we have a "Crossovers that SHOULD be" thread? If so, there's some good stuff in this TV Tropes thread. I particularly like my idea:
Gurren Lagann 40,000. Time to take society and the galaxy back.
Pronounced "shy guy."
Quote:The defeat of the Anti-Spiral causes a rift in spacetime that the Chouginga Gurren-Lagann and all associated mecha get sucked into, leading to the Warp, which the Dai-Gurren-dan fights their way out of. Taking stock, they discover that Nia's ontological signature is stable, conclude that their own galaxy is almost certainly safe (the warnings of the Spiral Nemesis were broadcast on Earth during the battle, so that's not a problem), and turn their sights outward, discovering a galaxy filled with suffering. What do they intend to do about it?
...Duh. Who the hell do you think they are?
Gurren Lagann 40,000. Time to take society and the galaxy back.
Pronounced "shy guy."