I know it's spartan, but have you seen mini wallet inside the game? you can already send hucs to an address (but there isn't an address book)
I can't really do much more with this kind of interface, i have to focus on other more important stuffs and unlucky RPC commands hasn't access, afaik, to address book
anyway i'll add something to the mini wallet, like the ability to look inside a transaction (need to ask domob to do an RPC command that decode tx informations in a readable format)