By the way if anyone has a better idea to manage to manage the taxi slot times lets hear it!
A good start would be to use runway 24 for departures. I know, noise abatement. Well design a SID that says at 500' you make a max rate, min speed climbing right turn.
Second. Slots appear useless if you still have a 28 minute delay. Would be easier to call ready to start and work from there. It cannot be a worse outcome than what happens at present.