Just thought I'd mention as I saw the news post about downloading older versions of Apps. When submitting a new version of the App the developer has an additional question about is there significant UI changes that would break older versions of the App (or something like that). If you select yes you get all your old versions (not sure how far they go back, the current App I'm updating is relatively new) and then you can tick versions of the App you don't want available through iCloud.