Tokens (your own ERC-20 compatible or predefined like DAI, Unicorn, OMG, SNT, ZRC, GNO, ..) - add your own in the app or on https://github.com/ethereum-lists/tokens so everyone can use it
display value in fiat like EUR, NZD, USD, .. or MakerDAO DAI
Standards
ERC-67 / ERC-681 / ERC-1328 URLs (e.g. scanned from QR-Code or via intent)