If I owned WEG and could relaunch the game....
I would ditch the overall concept of an earth invasion, and instead
have earth as the nexus of a multiverse of realities. For example:
instead of traveling to Egypt to fight the Nile Empire, you would
travel to Egypt, pick up the nexus portal to Terra, and adventure in
Terra. Plots could still span the multiverse, and most of the rules
would not have to change. Possibilities can still be earnt and spent,
etc. The only thing really being lost is the idea of some overlord
becoming TORG.
But that's just me. How would other folks change or adapt the game if
it was your's to own??? (figured this might generate some interesting
discussion around here).