In the old app we have several ways of navigating within a collection.
In DPS2015 we miss at least a navigation bar at the bottom of the screen, to let us quickly swipe from end to the beginning (or vice versa) of a collection.
If you open a collection you've already started to read, you land on the page you last visited. This is correct behavior.
But if you then want to read from the beginning, the only way of doing this is by swiping one, and one article - until you after 50 articles find the one you are looking for.
We use Content View, and not the browse page.