The worst scenario of BTC might be not considering it as the decentralized money system. If BTC is being centralized by any means, people will lose faith and interest which they have for now. BTC is the king of crypto space, losing this crown would be the worst of the worst BTC had ever experienced.
That is totally true, because the idea of decentralized system is part of what bringing in investors into the entire cryptocurrency and people hoping that as a Decentralized system would prevail over centralized