It is worth noting that there may be beneficial effects in high-entropy disordered rock salt cathode materials with respect to lithium mobility. A "more disordered" system will likely see a wider range of site energies within the lithium transport network improving the conductivity as has been observed in as range of solid electrolyte materials . However, we postulate that any increase in mobility will also be minimal at high fluorine and lithium contents as the formation of Li-F rich regions will minimise the impact of any local distortions that influence the site energies in the lithium diffusion pathway from introducing more transition metals.