Scatter is a wallet that does what Keychain does for steem, but Scatter works for EOS TRX BTC and ETH. If we followed up on my SPS proposal. Ive already made a scatter github feature request and @nsjames already responded with information on how to getthis done with links to scatter's wallet pack.
(Mockup of the final result )
https://github.com/GetScatter/ScatterDesktop/issues/454
https://github.com/GetScatter/walletpack
With appropriate founding we can have Steem on Scatter and not have to only use keychain chrome extension, but we can have a desktop steem dapp wallet.