smiddy:
Isn`t the scripture at Rev.12: 12,13 Pointless ?
As with the rest of Revelation, it's just cryptic idiocy. Under even the most basic scrutiny, the concept is stupid.
Aside from the fairly significant fact that Satan doesn't exist (somewhat limiting his impact), not only has 'Satan'—as you've already indicated—supposedly always had access to Earth anyway, but he's also purportedly invisible and supposedly able to influence people and do other things from heaven. So it would make absolutely no measurable difference even if he were 'on Earth'.
Maybe he should join forces with Doctor Evil and Ming the Merciless, and start an evil guild of fictitious villains.