a great idea if you're going to build an online wallet for an altcoin. but really what has been said by
@ikydesu. if you are ready, you have to create something different from the others. for example cryptonator besides making an online wallet, on the other hand their also makes altcoin menu to see what is currently down or up, on the other hand their also built a converter bitcoin/altcoin to altcoin/bitcoin that allows users to calculate the totality of the estimated costs when it should trading.
and are no less interesting, cryptonator also provide access for users of smartphones, android and mobile other .
sorry not mean I dropped your efforts to build a wallet, I only give advice to you to make something different and have never been there (if possible)