There is chance for ethereum to be one of the crypto currency to be used widely. It is well design and fast transaction.
In terms of well designed, I doubt that holds much water because the Ethereum protocol have been open to hackers not once nor twice:
http://fortune.com/2016/09/04/ethereum-fall-out/https://wccftech.com/ethereum-etherparty-ico-hack/If it were unable to overtake Bitcoin at the peak of its shine and at a time when Bitcoin house was falling apart, I strongly doubt its chance now that Bitcoin have gotten its groove back. The huge threat poised by Segwit2x is now abated, trading in Bitcoin Future successfully took off in the U.S. and Japan making a move for 2018 and then the implementation of Lightening Network, right on the way! Bitcoin is obviously waxing stronger and more popular by the day.