Conversion to euro and a graph (just the one from coingeek is fine) would me it perfect 
Euro will be in the next release. I have yet to figure out how to best implement graphs. Where should I put it in the application?
you could add a graph button on the addresses, or add it just below.
simplest way is using a webview on the graph url.
Just published a new version with graph support. Should be in the Play Store in a few hours. Would appreciate comments