please have a look at  http://www.rezashot.com and http://www.rezashot.com/tabid/1109/Default.aspx

you will find 4 repository modules:

1- The one in http://www.rezashot.com is a regular one.

2- others in the second url are as follows:

• dashboard to a multi column view of repository
• multi column view to http://www.rezashot.com objects using another skin template.
• another view to http://www.rezashot.com objects ( latest uploads)

Enhancement to repository are as follows:

• letting module show a view on another repository object
• changes for multi column view of repository
• possiblity to see dashbaord style (latest, top10, ...) of objects in repository
• letting repository to show only one repository object.
• selective showing of  header and footer of repository.
• code enhancements for better speed. and a 2 or 3 buggs.

Now I want to integrate UDT to repository such that users be able to define their own data structures,

I like the multi-column and have done the same for a private module I've written that used a fair amount of the Repository functionality. I haven't given it to Steve because I didn't like the way that entries that weren't the same height lined up oddly. I had a fair amount of text in my entries so it looked really odd when one was set lower on the horizontal than its neighbor. I never did find a way to get things to align horizontally along the top.