Hey, it's me. said:
The lived in look back. Especially Coruscant. The Empire being defeated has created a power vacuum (as with all dictatorships) different splinter cells all vying for power. Start VII with a street battle on Coruscant, big and epic, between two of the fractions. Who's fighting? Why are they fighting?! This is exciting!! Not everyone's still sitting around with their feet up after Endor reminiscing about the battle.
This is probably the first good reason for going back to Coruscant that I've read so far. It would certainly recall the Taungs and the Battalions of Zhell fighting for control of the planet "a thousand generations" ago.
Personally, I want the sequel trilogy to just stay away from Coruscant completely ala the OOT. The prequels spent way too much time there, especially the latter two. There's an entire galaxy to explore. I'd want each of the three sequels to take an Empire Strikes Back approach and show us worlds we've never seen before.