Major - P3 shardAndDistributeCollection sets numInitialChunks: 1000 but server recently implemented SERVER-92762 which has been backported to 6.0, 7.0 and 8.0. It sets the default value of numInitialChunks to 90. So, we don't need to set it to a 1000 in this shell helper anymore.
sh.shardAndDistributeCollection = function(ns, key, unique, options) {
sh.shardCollection(ns, key, unique, options);
sh.reshardCollection(ns, key, { numInitialChunks: 1000, forceRedistribution: true });
}