Bitcoin will have a market cap of 1trillion and a value of 100k. It will be considered as another option by people looking to store some value. The one trillion will come from a majority of gold lovers switching sides understanding btc is a new generations gold.

Eth for me could go two ways. It could be the google of tomorrow hosting tons of amazing applications that may become the corporations of tommorow, or it could get absolutely decimated by the SEC who could blame them for all of the ICO scams taken place on top of their platform (take this view with a pinch of salt, this is the very worst case scenario for Eth)