As you know I'm all for pushing the boat out when it comes to radical ideas but short of making this a total remake how do you intend to replace every shot and reference to the Death Star with Coruscant?

And how would that even make sense?

Coruscant isn't a weapon, it's a planet.

You need the threat element to get the Rebels out of hiding.

If you had the Rebels just growing an enormous pair and marching right into the capital without them having gained some new advantage or have some sort of final threat dangling over them it screeches the question, why didn't they do it earlier?

You could have the Empire planning on blowing up Coruscant using a Death Star type plot device (possibly hidden on or built into the forest moon) hoping to blame the Rebels.

The Rebels could get wind of the plan and come to the rescue only to be caught in a trap.

You still wouldn't see much of Coruscant.