Your wish is your command....Roland Emmerich is going to do either a two-or three part sequel, set 20-25 years after the aliens were routed. We're living with the consequences of the attempted invasion, rebuilding and trying to integrate the alien technology into our own.
What we don't know is...before the destruction of the mothership....they got off a distress signal. Round 2 is coming. No firm date yet, but it's soon. (This is from Ain't It Cool News.)
I envisioned such a sequel when it first came out back in the mid nineties.
My version:
The time between the Original scout crash at Roswell and the invasion was about 40 years.
The sequel would take place 30-40 years after the defeat of the invaders.
Will Smith, now old, would be the Top General in charge of United Earth Forces. Remember all Earth governments and large cities and capitals were destroyed. Incorporation of the alien technology would have been completed and we would be ready for them. Except, their technology has advanced in 40 years as well.....................
Tagline for movie:
You don’t lose a huge battleship and don’t go looking for it......................