In the next year ETH will overtake BTC as the number 1 cryptocurrency. I would unload your bitcoin while you still can.
Maybe, because sometimes the value of bitcoin is going down while the Ethereum is going up, but in just a little of time that ethereum can reach the number 1 and bitcoin is still the king of Cryptocurrency. For me bitcoin and Ethereum is a good coin but still bitcoin is still the king of this crypto world.
I think ethereum will not overtake bitcoin. Theres a possibility but this is not the time yet. Maybe if bitcoin will be banned in many countries and the effect is bitcoin price crashes. Bitcoin is very popular all over the world and it will be very difficult for ethereum to overcome bitcoin and its popularity.