1) As far as I know the only way to export metadata is via the OPF file. Why is this not OK for you?
2) At the moment you can specify the mask for the name to be generated using Save To Disk. However I do not think it allows for all the fields you mentioned. If you raised a ticket as an enhancement request for any that are missing that you want to use I am sure it would shortly appear in a future calibre release.
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