The ability to configure NGINX, Apache, LS, OLS values from the control panel, similar to the current capability to edit the my.cnf file. I believe this would significantly simplify the process compared to manual adjustments in configuration files.
+1
And persist these changes.
It's already possible for Apache by using the ModSecurity config.
For litespeed you have to follow the litespeed docs, which is make a admin account for its settings page on port 7080 I think it is.