Which 'dead game' would you like to see reborn?
My 'joking-but-not-really-joking' answer to this question is always: D&D 4th Edition. I'd love to see it released as a general system, especially to be able to roll up a Superhero-style game which I think 4E is basically perfect for (they damn near proved it with the Gamma World re-release, honestly). But everyone supposedly hated 4E, so I may be the only one.
Instead, now that we've seen RIFTS Savage Worlds, and it was successful (and fun to play, in a particularly RIFTS way that meshes strangely but well with the Savage Worlds system), I'd absolutely LOVE to see Teenage Mutant Ninja Turtles and Other Strangeness get a reboot. Especially the mutant creation process would be fun in the SW system, I'm sure (especially if you get someone clever to write it, like maybe Rob Donoghue ) it has enough fans that it'd do pretty well in Kickstarter-land.
What would you like to see?