Well this is a radical ideas thread. So we dont know now how to pull it off but video technology will catch up pretty quick.

Imagine if the first film had a more tranquil smaller coruscant. Like a small city with parks and open spaces, etc throughout. Then as the war prgoresses, people swarm into the capital to take refuge, huge housing programs are undertaken, and then city grows immensely as billions arrive from around the galaxy fleeing the war.

In fact in AOTC Anakin and Padme travel as refugees to Naboo(which should be changed to Alderaan).

Maybe refugees arrive on Coruscant and then are transferred to accepting worlds?

Available footage? No idea.