Startup Idea: Browser Extension or PC App for Cryptocurrency Trading

Startup idea to develop a browser extension or PC application that integrates a cryptocurrency wallet and provides a platform for online altcoin trading akin to Coinigy.

I am a blockchain developer and copywriter for a new EOS platform being released (hopefully) next year. I find constant problems with a lack of exchanges on the market.

I feel as though the Coinigy app built into the Bittrex wallet is an amazing team, but I would prefer a possible browser extension or PC app that allows me to have a built in cryptocurrency wallet along with the ability to link to an account that can trade altcoins online... a la Coinigy.