What series should Sonic the comic crossover with next?

[teamrandom21 26]

now i know we're all warn out from crossovers, but if the comic could do anther one in the future, what would you like it to crossover with. I would like to see it crossover with nights into dreams. I know NIghts appeared in the megaman crossover, but i would like the crossover to be more focused on just the 2 series, which is owned by sega and shouldn't be a problem.