In the next year ETH will overtake BTC as the number 1 cryptocurrency. I would unload your bitcoin while you still can.
every coin would be able to take over the Bitcoin position anytime. because with hard efforts it is certain to achieve it very easily. other than that with Bitcoin develop slowed is an opportunity to take over Bitcoin. I see that Ethereum is constantly improving. so Ethereum just needs to keep improving the develop. in order to take over Bitcoin.