There are actually so many exchanges existing in the crypto space already, the successful ones are the ones which got the features of what the crypto users wants. Tho people's choice varies you know, but at first everyone would love an exchange with an easy user interface especially the newbies, secondly! Security,  everyone wants an exchange which is very secured because no one would wants to loose his or her funds to hackers and this is why so many people in the crypto space prefers a decentralized finance, lastly I think people in crypto space doesn't like KYC because there like being anonymous.