ETH will allow $2T of underground economy to become more structured (and possibly less underground) through DAOs.http://www.washingtonpost.com/blogs/wonkblog/wp/2013/04/23/americas-2-trillion-shadow-economy-is-the-recessions-big-winner/If it captures 1% of that $2T, it is equivalent to $20B, which would put ETH somewhere around $150. Those who sell for $2 will shit bricks, eat sand and may even commit suicide in the years to come. If it captures 10% of that ETH will be $1500. I know it sounds crazy, but so did the Internet in 1995.
Once it's launched their main focus will be on scalability, which I think is the real reason crypto is not ready for mainstream. Once they can handle 100K TPS (and I'm sure they will), it's game over.
From my personal point of view, both ethereum and bitcoin are very potent and can be used extensively. If bitcoin is the world's largest market capitalization with over 55% of the total market capitalization, ethereum is the second largest with enormous ecosystems and large communities. Still think ethereum is more potent and can beat bitcoin in the future