Nah, just download the route and winds, performance if you have that option, enter STAR and SID and your done. If you can't download performance figures it is five clicks on the EFB, enter into the FMC and crosscheck. The FMC-download can be started during taxi-in once taxi speed drops below 20kts and the inbound route is deleted. FMC needs all of 1 minute to set up. Since the downloaded route is crossloaded into the EFB you don't need to look for charts, they're right there, brief and you're done. That is only flightdeck preparation though, but even with a leasurely walk around one does not need much more than 5 minutes.
Anyway, if the local rules require such nonsense one simply has to cope with that and adjust turnaround times accordingly. It is not rocket science, is it?
So who's doing the Refuelling Supervision then? We're pretty bionic but cannot be in two places at the same time!!