This is pretty self-explanatory, but I was thinking about this recently while reading the info about Captain America Civil War and thinking of the series itself.
Imagine if Civil War played out in the DCU. Would Superman be pro-registration with Bruce against registration and Superman? Would that premise work better with DC characters?
How would Identity Crisis play out with the Avengers?
Who would the future villain be in a Marvel Universe version of Armageddon 2001?
How about the original Secret Wars with the DCU? Maybe the Beyonder would be a rogue Monitor or Guardian?
Maybe Secret Invasion with White Martians?
JLA Disassembled?
Bloodlines with Marvel heroes and villains?
The Final Night in the Marvel U?
Marvel One Million?
And so on...