[GeoffR]

Well, it could be done with a firmware patch, but there is an effort involved to find the new patch and to update it every time new firmware is released. It doesn't seem like a very useful patch to me, but then I don't use collections.

Edit: Maybe I haven't understood what you want though. Deleting the 'Previews' and 'Articles from Pocket' options from the librray menu, and replace them with links to some collections? You can already add a tile to the homescreen to link to collections though.