one that I know is going to be very expensive. transaction fees will increase many times. without a centralized exchange, crypto will suffer a setback. and that will make the trust in crypto decrease. some might think DEX can solve that problem, but be aware that it takes a lot of processing to trade from different blockchains. and it will require a fee, different if we use CEX. and when all CEX is suspended, and crypto becomes illegal this will probably be the worst thing for crypto development.