It ultimately depends on whether we are going to pursue the UK strategy or the Gottlieb strategy, because otherwise there is no goalpost to measure. Roadrunner has the right question: we need to know long term damage numbers to kids, long term damage number to vaccinated adults to be able to decide. If the UK approach is correct, then no because you want the illness to circulate to develop natural immunity.
Otherwise, if you are looking just at deaths in kids, it's an argument to do this every flu season and every RSV season. And I can personally attest, as a person currently suffering long RSV, long RSV and flu happen as well.