Jquery is a complete robust and very light lib.
I hope modx gonna make its way with jquery after 1.0 because, i can’t imagine the combined power of modx backend with jquery and Jack Slocum’s ext library.
http://ajaxian.com/archives/ext-10-for-jquery-appoaches
IMHO, i really don’t like prototype because prototype is not a complete lib.
<!-- Start QuickEdit headers -->
<script type="text/javascript" src="manager/media/script/scriptaculous/prototype.js"></script>
<script type="text/javascript" src="assets/modules/quick_edit/javascript/Cookie.js"></script>
<script type="text/javascript" src="assets/modules/quick_edit/javascript/Drag.js"></script>
<script type="text/javascript" src="assets/modules/quick_edit/javascript/moo.fx.js"></script>
<script type="text/javascript" src="assets/modules/quick_edit/javascript/QuickEdit.js"></script>
<!-- End QuickEdit headers -->
Instead of above with jquery that can be handled with 2 lines on js integration.
Just a suggestion...
BTW, modx rocks