When the Legion gets to be #1, you know DC will want Waid and Kitson to crossover with other books to help boost the sales of their other titles!

So, who would you like to see the Legion crossover with?

No one! I hope this cross-over with the Titans is the last one we see with any group or individual from the 21st Century.

But maybe they'll move some of their other titles to the 31st century once they see how successful the Legion is!

Right!

We'd finally get the 30th century adventures of Barry Allen, THE FLASH.

All the Superman books would move to the 30th century. Jimmy would rejoin as Elastic Lad!

Spinoffs from other titles would obligatorally be set in th 31st century!

if marvel and DC would get their "you know what" together i'd love to see a Legion/Guardians of the Galaxy crossover.

As far as inter-company crossovers go, I'd like to see a Legion/Alpha Flight crossover.
I know it would make no sense, but it would be really fun.