Apps Scom is eying or should be which are based on renewable resources...music,travel,events and ticketing,tourism,ebooks and magazines, and deals.Any developer who beats them to the chase earns Amazon money.Once you get Kenya you get E.A,once you get E.A...you've got Africa! Implementation is the only catch.Needs Steve Jobs 'negotiation skills'.
Almost forgot,the app has to have a downloader to resume downloads and a way to integrate m-pesa transactions.Ticketing,events and deals should focus on the future and that is NFC or whatever contactless technology that emerges.