R – cloning or copying list items in sharepoint 2007 moss

There is "stsadm -o deleteuser". See this TechNet article. That command will delete a user from a site collection.

You can also find more options on Keith Richie's blog. That is from WSS 2.0 / SPS 2003 era but there is a lot of good information there.

I have faced a similar issue a while ago. I had to create a very customized view and I had to give up the ListFormWebPart completely, and have created my own webpart to render the data.

Generally, when you customize the aspx file in SPDesigner, all your changes will be in the aspx file itself. Open it in SPDesigner and you will see there all the changes you have made. After you have converted to the XSL Data View, the standard ListFormWebPart is replaced by a DataFormWebPart, which doesn't care about the <View> tags specified in the schema.xml; Look in the aspx file itself for the ListFormWebPart.

Why not do all the customizations you want on a list, save the list as a template (it will include the associated AllItems.aspx) and then use that template in your feature to create your list? You could add the extracolumn from code (if it's dynamic and cannot be included in the template), and so on.