Contacts list?
Still better than the new Google Mail GUI then, which moved away from a contacts list for some magic, ethereal AI driven "you just type, we know what you wanted to type and who to", side bar where everything is combined into one system, that really is just a push to force everyone to still used the now zombified yet dead 7 times over Google+ or circles or whatever flavour of the week is in vogue.
/rant