Regarding your second point, resources:
While the nexus 10 is a xhdpi
device, it will use the launcher icon from xxhdpi
"one bucket up" if available, so make sure to provide one as it will look much better/clearer/sharper. Reason is that there is room for a bigger icon on this device. Launcher icon size at xxhdpi is 144x144 pixels.
For reference see: https://plus.google.com/118292708268361843293/posts/ePQya3KsTjW