What what I have read, Application Scoped settings in the setting file
are read only.  Why is this?  Is there a good reason for this
restriction?

I understand that some settings will be different for each user of the
app, hence the User Scoped settings.  User scoped settings can be
changed and persisted at runtime.

But there are also settings that are not User Scoped (i. e.
Application Scoped) that still might need to be changed at runtime,
yet this is not possible.  Why?  Again, is there some good technical
reason for this restriction?

What alternatives are available to me to be able to persist
Application Scoped settings?

Thanks,

Chris