Hello! It may have already been done, but how about the ultimate media app? By that I mean you could use it to stream music and video from your box.com, copy.com, drop box, SkyDrive, etc. It would also function as an ereader with .pdf (and the other file types, i cant remember them) and with rss feeds. This may be too big of an app to develop however. :/ I know pocket file manager exists, I have it. However, it's ugly, can be sluggish, crashes frequently, (might be hardware problem) and overall it's not very pleasant. A simple, elegant UI, would be perfect.