Disabling systems

[Fidius-jko]

I want to make mods system, where mod can disable my systems for replace it for mod's systems.
I suggest how we will disable systems/plugins:
System has parameter of can i to disable it(by default false) or run it if another system disabled?
Examples

app.add_systems(Update, my_cool_system.can_disable(true))
...
mut disable: ResMut<Disable>) {
    disable.set(true, "crate_name/my_cool_system");
}

app.add_systems(Update, system2.run_if(not_disabled(system)))
...
disable.set(true, "crate_name/system");

Log
... [Info] disable crate_name/system2 becouse disabled crate_name/system

Or

app.add_systems(Update, system);
...
mut disable: ResMut<Disable>) {
   disable.set(true, "crate_name/system");
}

Log
... [Warn] system crate_name/system cannot disabled

How we disable startup systems:

app.disable_list(Disable {..., "crate/startup_system"})
.add_systems(Startup, startup_system.can_disabled(true));

startup_system doesn't run.

How we disable plugins:

app.disable_list(Disable {..., "crate/MyPlugin"})
.add_plugins(MyPlugin);
// Or 
disable.set("crate/MyPlugin");
// All systems in plugin are disabled

OnEnter/OnExit systems are only affected by disabling at the beginning of the State

Thanks.