Eliminating "pages" for comments would be biggest functional improvement, for me.
Just one long thread of comments you can scroll. Scroll up to top and release to refresh. Ability to sort comments by newest (gameday thread) or oldest (regular discussion). In other words, the same way most forum apps function. Though I'm not sure how those 20,000-page legacy posts would be handled.
In any case, app is a great idea. Kudos for the constant efforts to make CIS better. It's easy to support this company.