as well as justification why just re-creating the interface is not ideal

You cannot just recreate the interface. You would at least have to rotate the key, because it has to be unique. And swapping the interface does not allow setting an IP for an existing connection:

    log::info!("Starting...");
    wifi.start()?;
    log::info!("Connecting...");
    wifi.connect()?;
    log::info!("Connected");
    wifi.wait_netif_up()?;
    log::info!("Ready");

    log::info!("Changing ip");

    wifi.wifi_mut().swap_netif_sta(EspNetif::new_with_conf(&NetifConfiguration {
        key: "test".into(),
        ip_configuration: ipv4::Configuration::Client(ipv4::ClientConfiguration::Fixed(ipv4::ClientSettings {
            ip: ipv4::Ipv4Addr::new(192, 168, 178, 244),
            subnet: ipv4::Subnet {
                gateway: ipv4::Ipv4Addr::new(192, 168, 178, 1),
                mask: ipv4::Mask(24),
            },
            dns: Some(ipv4::Ipv4Addr::new(1, 1, 1, 1)),
            secondary_dns: None,
        })),
        ..NetifConfiguration::wifi_default_client()
    }).unwrap()).unwrap();

    log::info!("Changed ip");
    wifi.wait_netif_up()?;

    log::info!("Netif up again");

Above code will simply timeout.

Cannot change network interface after creation #332

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