Hi Prakash,

For #1, do you still experience the reported accessibility issue?

I exported the following content two links and a table with the latest version and the content was read by the screen reader:

<div id="foo">
    <a href="https://www.google.com">Google</a>
    <br />
    <a href="mailto:someone@yoursite.com">Email Us</a>

<table>
  <tr>
    <th>Date</th>
    <td>12 February</td>
    <td>24 March</td>
    <td>14 April</td>
  </tr>
  <tr>
    <th>Event</th>
    <td>Waltz with Strauss</td>
    <td>The Obelisks</td>
    <td>The What</td>
  </tr>
  <tr>
    <th>Venue</th>
    <td>Main Hall</td>
    <td>West Wing</td>
    <td>Main Hall</td>
  </tr>
</table>
    </div>

<telerik:RadClientExportManager runat="server" ID="RadClientExportManager1">
</telerik:RadClientExportManager>
<input type="button" onclick="exportElement()" value="export" />

<script type="text/javascript">
    function exportElement() {
        var pdfSettings = {
            fileName: "PDF-Export",
            avoidLinks: false,
            margin: { top: 25, left: 15, bottom: 10, right: 5 },
            paperSize: "A4",
            landscape: "Portrait",
            title: "PDF",
            author: "UserName",
            subject: "Export to PDF",
            keywords: "a keyword",
            creator: "John",
            date: new Date(2015, 10, 25)
        };
        var exp = $find("<%= RadClientExportManager1.ClientID %>");
        exp.exportPDF($telerik.$("#foo"), pdfSettings);
    }
</script>

Regards,
Rumen
Progress Telerik

Straight to the points:

1. The accessibility request has been approved and goes into an Unplanned state.
2. You can control the output through the PaperSize and Margin properties: 
   
   

   <telerik:RadClientExportManager runat="server" ID="RadClientExportManager1">
       <PdfSettings  
           PaperSize="A6" 
           Landscape="true" MarginRight="10mm" MarginBottom="10mm" MarginTop="10mm" MarginLeft="10mm" FileName="MyFile.pdf" />
   </telerik:RadClientExportManager>

   
   
3. Multipage and Automatic Page Breaking exports are available and described at https://docs.telerik.com/devtools/aspnet-ajax/controls/clientexportmanager/functionality/pdf-multi-page-export. 
   
4. The page header and footer templates are available and you can implement them as shown below:
   
   

           <script type="text/javascript">
               function exportElement() {
                   var exp = $find("<%= RadClientExportManager1.ClientID %>");
                   var pdfSettings = {
                       fileName: "PDF-Export",
   
                       margin: { top: 25, left: 15, bottom: 10, right: 5 },
                       paperSize: "A4",
                       landscape: "Portrait",
                       title: "PDF",
                       author: "UserName",
                       subject: "Export to PDF",
                       keywords: "a keyword",
                       creator: "John",
                       template: $telerik.$("#page-template").html(),
                       date: new Date(2015, 10, 25)
                   };
                   exp.exportPDF($telerik.$("#panel-container"), pdfSettings);
               }
           </script>
           <style>
               /*
               Make sure everything in the page template is absolutely positioned.
               All positions are relative to the page container.
           */
               .page-template > * {
                   position: absolute;
                   left: 20px;
                   right: 20px;
                   font-size: 90%;
               }
   
               .page-template .header {
                   top: 20px;
                   border-bottom: 1px solid #000;
               }
   
               .page-template .footer {
                   bottom: 20px;
                   border-top: 1px solid #000;
               }
   
               /*
               Use the DejaVu Sans font for display and embedding in the PDF file.
               The standard PDF fonts have no support for Unicode characters.
           */
               .k-grid {
                   font-family: "DejaVu Sans", "Arial", sans-serif;
                   width: 400px;
               }
           </style>
   
           <div id="panel-container">
               <p>
                   Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer felis
           libero, lobortis ac rutrum quis, varius a velit. Donec lacus erat,
           cursus sed porta quis, adipiscing et ligula. Duis volutpat, sem pharetra
           accumsan pharetra, mi ligula cursus felis, ac aliquet leo diam eget
           risus. Integer facilisis, justo cursus venenatis vehicula, massa nisl
           tempor sem, in ullamcorper neque mauris in orci.
               </p>
               <p>
                   Ut orci ligula, varius ac consequat in, rhoncus in dolor. Mauris
           pulvinar molestie accumsan. Vestibulum ante ipsum primis in faucibus
           orci luctus et ultrices posuere cubilia Curae; Aenean velit ligula,
           pharetra quis aliquam sed, scelerisque sed sapien. Class aptent taciti
           sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos.
           Aliquam dui mi, vulputate vitae pulvinar ac, condimentum sed eros.
               </p>
               <p>
                   Aliquam at nisl quis est adipiscing bibendum. Nam malesuada eros
           facilisis arcu vulputate at aliquam nunc tempor. In commodo scelerisque
           enim, eget sodales lorem condimentum rutrum. Phasellus sem metus,
           ultricies at commodo in, tristique non est. Morbi vel mauris eget mauris
           commodo elementum. Nam eget libero lacus, ut sollicitudin ante. Nam odio
           quam, suscipit a fringilla eget, dignissim nec arcu. Donec tristique
           arcu ut sapien elementum pellentesque.
               </p>
           </div>
           <script type="x/kendo-template" id="page-template">
           <div class="page-template">
               <div class="header">
                   <div style="float: right">Page #:pageNum# of #:totalPages#</div>
                   This is a header.
               </div>
               <div class="footer">
                   This is a footer.
                   Page #:pageNum# of #:totalPages#
               </div>
           </div>
           </script>

   For more information check out these resources:
   • Kendo UI Drawing API Page Templates 
   • RadClientExportManager Client-Side Programming Overview