sectionEX is great, and I can't believe that its not part of the core joomla installation. It is such a necessary feature which is surprisingly missing from joomla. But thankfully, SectionEX fills that void. Very easy to setup and very stable.

for future additions, maybe sectionEx can add alphabetical listing of articles within a section/category with Alphabetical headings and a bar at the top to jump to the particular alphabet.