A rolling hub is great when the weather is great (ATL). But when thunderstorms roll throughand departure/arrival gates get shut down the system gets overwhelmed and there is no longer any accumulator to absorb the shock. If the airport shuts down it’s even worse, it’s impossible to catch up.

Look at what happens to Delta in ATL when thunderstorms roll through or it snows. It takes Delta days to recover.

I predict this will fail and will last for a single summer.