Name lookups. Like DNS.

If you have a trusted Oracle on whatever chain you’re using, then your smart contracts can start working with real world data. And that opens up lots of possibilities. Of course it puts a lot of faith in oracles. But for instance you could have an inheritance scheme that triggers on the death of a relative. You could do life insurance. You could affect any sort of contract was transaction money or currency.

To your points about central control, I think it’s anthema to the idea of a distributed system. If your resistant to malicious actors you have to be resistant to censorship. Because it’s only a matter of time until the central authority becomes a malicious actor. At least for some of the population.