The main reason I’m updating LZIL is to add a “flush cache” option. Then I’ll be able to run PHP in non-CGI mode and be able to delete the damn cache when I have to. For me, that means I’ll be able to have a more responsive website. For you, it means added convenience. For now, the options page just shows some debug information.
There are also several additions that various contributors have made over the year that have yet to be officially incorporated.