The real challenge is to create simple, robust and unchangeable features like #bitcoin.
By the time your altcoin has built a working network, its feature list is passe.
#bitcoin
An altcoin is competing against #bitcoin's reliability and freedom *today*, not 9 years ago.
At any point in time, if a serious app developer or layer 2 protocol developer, compares a nascent altcoin with bitcoin, they'll build on #bitcoin 9 times out of 10.