you could separate out into separate umbraco tabs, as a quick tidy up...

Other than that I think you may need to inject jquery into the "umbraco\editContent.aspx", if you don't want to fork the umbracoCMS source.

I was having the same problem so I decided that I would like to be able to do 2 things:

1) Collapse/Expand all rich text editor fields

2) Collapse/Expand a single rich text editor field

This is rough and not 100% tested for side effects but it seems to be working without causing any problems on 4.11. You will need to make it look pretty on your own.

So... on the umbraco\editContent.aspx page as, Mike mentioned, you can use the following in jQuery(document).ready( function(){

var expAll = jQuery('<a></a>');
expAll.text('Expand/Collapse Rich Text Editors')
      .on('click',function(){
          jQuery(this).parent()
                      .find('.propertyItemContent textarea')
                      .each( function(index, elm){ jQuery(elm).parent().toggle();} );
          })
      .prependTo('.tabpagescrollinglayer');
jQuery('.propertypane .propertyItemContent textarea').parent().siblings().css('cursor','pointer')
                                                                         .on('click',function(){
                                                                             jQuery(this).siblings('.propertyItemContent').toggle()
                                                                             });

Hope that helps.

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