Formulate a grouped SOAP-WSDL query to retrieve all the requirements' comments/test cases coverage at once

Here is our tree-like structure that we're working towards developing.  Each bullet point represents a section of rows in the output.  We're not entirely comfortable with this structure, but it's a starting point for development.  The goal is to have a report that can be quickly generated and then used during meetings to talk through current status.  This has proven unfortunately necessary because the user interface is just too slow to navigate through during meetings where we don't want participants to be waiting on SpiraTeam.

• Releases & Iterations
• Comments (within two sections: less than 8 days old and a collapsible section with comments older than 8 days)
• Tasks & Incidents (together, through a Entity union operation), currently sorted by Start Date then End Date
• Comments (same structure as above)
• Requirements
• Comments (same structure as above)
• Tasks & Incidents (same structure as above)
• Comments (same structure as above)
• Requirements (across Releases and Iterations)
• Comments (same structure as above)
• Tasks & Incidents (same structure as above)
• Comments (same structure as above)

Believe it or not, the report can be executed in seconds, and even under a second at times.  The report execution is probably eased by the general lack of joins.  Also, the jQuery-facilitated organization of the report output is similarly quick.  The longest part of the process is waiting for the browser to load the data and the jQuery library so that the custom script can start executing.  Your experience may be quite different of course due to your different data.