With a POD after the Second Punic War would it be possible to make Carthage into a Roman allied state similar to Rome's allies in Italy.
Cato the elder dies earlier. You can't get him to shut up about Carthage, so instead that's the next best thing. I mean, the guy was ancient when he died OTL by ancient standards, 85 years old. Shouldn't be that hard to have him die two decades earlier, enough time for tensions about Carthage to be calm by the time the original indemnity it up.
An interesting change this would lead to would be no Cato the Younger, as his grandfather (son of the Elder) was born when Cato the Elder was 80 years old ...
Probably would have lightened the competition in Rome with the Boni lacking an important ideological cornerstone