I don't think there will be anything special about Ethereum prices at the end of 2020,
Ethereum prices in 2020 will be in the range of $ 400- $ 700.
I dont relly belive in ETH and i think that it will by replaced by another technology in the next 2 years.
I'm surprised by what you think, Ethereum [ERC20] is the most widely used form to make other Altcoins,
and I don't see any technology that can go beyond Ethereum,
if there is, can you give an example?