Hi Tim,
For your second point, you are correct that those margins in Page Setup are globally defined and not saved with the specification. For this to be changed, your request has been forwarded to development.
As for your request for Statement Group Printing/Opening, perhaps I'm unclear what you are wanting to do. This function is used to Print each statement/sheet within the group, based on the internal settings (ie fiscal period, expand, suppress zeroes, etc). There is no requirement to Open each specification prior to printing.
Were you wanting to be able to open more than one specification simultaneously for editing, rather than just printing the statements? So the end result is that all 15 reports are listed under the Window menu and accessible for editing? Just to clarify what to request of development...