I think that the main token which should Eth holders a bit worried is EOS. if they do what they say they can then it might just destroy the dominance which Ethereum has in the smart contract platform.
Many of Ethereum's competitors today, one of them is EOS even though there is news I read that the technology used by EOS is Cloud tecnology and not Blockchain technology. With so many competitors, Ethereum's position will continue to fall from the top of the coinmarketcap.
Now the future of the project is directly dependent on upcoming network updates. If the development team strives for the task, Ethereum will likely succeed.
I am a fan of Ethereum with all its shortcomings, hopefully Ethereum can get through this difficult time