The newest UIWrapContent seems like a perfect candidate to implement a mainstream scroll view logic — capable of presenting the (possibly) infinite list of uniform items from a data source, yet consuming the absolute minimum of memory (only rendering what's on-screen).
Yet, the only method it presents for such implementation, is 'UpdateItem'. IMHO, another standard method would fit in to complete the concept I am speaking about: 'GetCount' (to specify the end exact number of items to be presented).
Is such a thing planned to include into the UIWrapContent interface, or is it left up to be implemented by hand when needed?