I know. I was going through the register-admin-dynamic-options.php and helper-templates.php this weekend. I managed to get the new options in the menus, but the changes I tried for the helper-templates didn't work. I can't make sense of all the variables. I thought I could use some of the code from the post/page template option (the one that doesn't use columns), since that has a default current post option already set ('self'), but the way the code gets the ids isn't the same.
If Kriesi updates the code it would be really useful to have the following options in the column content selection:
Current post/page content - make this the default instead of the latest post.
Singe post - at the moment you can only choose a category.
There is a workaround for selecting a specific post in a column, but it involves making a separate category for every individual post (and I'm not even sure if that works), which isn't very efficient, and also still doesn't allow you to apply a template to several posts (a category) where you only want the content of one post to show (ie the post that you apply the template to).
Thanks for trying to help as always!