ADA is the one coin i can see replacing Ethereum in the future. I firmly believe that for a blockchain to be the backbone of a huge financial network, as so many are trying to be nowadays, it is absolutely nessesary to guarantie a secure network. Things like Neo going offline last year or the Eth hack back in the day are an absolute no for big institutional investors. Even though Cardano is still in an early stage, there is no team of developers i trust more to achieve this goal, than those around Charles Hoskinson working for Cardano. Funktional programming should definately be more widely spread in the blockchain world, same goes for peer reviews. And for now Cardano is the only projekt that i know of that combines both.