Would you guys seriously want to **** around with your software system that is already so unstable? Be wary that it would void your warranty if something went wrong in the process or once you managed to change the screensaver - not worth the hassle IMHO.
VelarMan strikes again 😂 - happy to be the exception here and have now 10'000km in the counter, without any stability issues.
But back to the initial question, sure it would be cool to have that and even better to be able to install it directly from JLR Remote, instead of using a stick.
My suggestion to JLR would anyway be, to have a "My wish" button in the app, to allow people to submit innovative ideas and the community to vote on the most valuable features. Depending what it is, they could ask a fee based upgrade