Hi everyone,
I need to send some reports to a user as email attachments.
Currently, I use reportResults.reportMetadata to run the report and I insert the resuls via a component that's inserted on a VF messaging template.

The template looks like this;

<messaging:emailTemplate subject="Excel Data Export of Edgecast Reports" recipientType="User" >
<messaging:plainTextEmailBody >

Hi,

please find attached the report(s) you have requested...

Kind regards,
{!$Organization.Name}
</messaging:plainTextEmailBody>

 <messaging:attachment filename="VESOpportunity.HTML">
 <c:ReportOpportunityExportController xstrRptname="00O50000004TUS9"/>
 </messaging:attachment>

</messaging:emailTemplate>

The Component looks like this;

<apex:component controller="SyncReportController" access="global">
<apex:attribute name="xstrRptname" description="report ID" type="String" assignTo="{!reportId}"/>
<!-- apex:outputText value="{!ReportResults}" escape="false"/ !-->
  <style>
      table.reportResults {
          width: 100%;
      }
  </style>
  <apex:outputPanel id="reportResults" layout="block">
      <apex:outputPanel >
         <table class="reportResults">
           <thead>
               <apex:repeat value="{!reportResults.reportMetadata.detailColumns}" var="colName">
                   <th><apex:outputText value="{!reportResults.reportExtendedMetadata.detailColumnInfo[colName].label}"/></th>
               </apex:repeat>
           </thead>

           <tbody>
               <apex:repeat value="{!reportResults.factMap['T!T'].rows}" var="row">
                   <tr>
                       <apex:repeat value="{!row.dataCells}" var="cell">
                           <td><apex:outputText value="{!cell.label}"/></td>
                       </apex:repeat>
                   </tr>
               </apex:repeat>
           </tbody>
         </table>
      </apex:outputPanel>
  </apex:outputPanel>
</apex:component>

The component controller looks like this;
public with sharing class SyncReportController {

    public Id reportId { get; set; }
    public Id instanceId { get; set; }
    public Boolean reportIsRunning { get; set; }
    private transient Reports.ReportResults reportResults;

    public SyncReportController() {
        }

    public void setReportId(String theReport) {
        reportId = theReport;
        }

    public PageReference runReport() {
        reportResults = Reports.ReportManager.runReport(reportId, true);

        return null;
    }

    public Reports.ReportResults getReportResults() {
        reportResults = Reports.ReportManager.runReport(reportId, true);
        return reportResults;
    }
}

The trouble is pretty obvious;  
if the report returns more than 1000 rows the messaging will fail because of the apex:repeat call, and this report can return maybe five thousand rows.

My temporary solution is to filter the report into three different reports, based on a report-logic specific filter criteria, but that too will eventually fail.

Ideally, I would like something equivalent to "readonly=true" on the apex:component tag - It would make sense for SFDC to support this, because it is in effect a "page". but that's not going to happen.

I tried remoteObject but that is limited to 100 objects per call.
I used to be able to insert a report directly as an attachment but that has gone away since SFDC does not allow 

PageReference(requestURL).getContent()

On email services anymore...

Does anyone have any ideas? 

Many thanks,