I've been using Joomla 1.5 ever since RC3 and I've really loved it and I'm glad that 1. I chose to use a CMS and 2. I chose to use Joomla!
What I'm not entirely happy about is the lack of components avaiable for it. I know it will take people time to make them so I'm not going to get that angry.
I think Joomla needs to do more out of the box. It's perfect for what it's actually meant to be, a content management system, but it could be better by having things built in. I think an ACL (access control level) should definately be included and from memory they were going to make Joomla 1.6 just to add one. There aren't even any plugins or anything for Joomla 1.5 to do it yet. I think it should also come with a comments system as it seems to be like a standard thing it should have and something I really need.
Joomla overall is a great CMS and I highly recommend it, but it just needs some more built in features.
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