Load all cases without pagination on the My Cases page in the desk.com portal by adding this snippet of jquery code. It basically loads the next page of each page that has a next page specified and appends all the cases to the initial page.

mycases.js

(function($) {
  function nextPage(url, callback) {
    $.get(url, function(data, textStatus, jqXHR) {
      var cases = $(data).find('.mycases tbody tr')
        , nextUrl = $(data).find('#pagination a.next_page');
      
      callback(cases);
      
      if (nextUrl && nextUrl.attr('href')) nextPage(nextUrl.attr('href'), callback);
    }, 'html');
  }

  var nextUrl = $('#pagination a.next_page');
  if (nextUrl && nextUrl.attr('href')) {
    nextPage(nextUrl.attr('href'), function(cases) {
      $('.mycases tbody').append(cases);
    });
    $('#pagination').hide();
  }
}(jQuery));