you'd have to call the db to get the resource, then check the flag for the option, I don't think its too hard...a bit of php would do it
Yup Modx has a lot of sneaky advantages, in this case it really is just a flag on that resource, so its not hard at all to change. You can assign new variables to resources as well, total flexibility.
In some systems it could be a joke to get that functionality, like three steps all to work around the weaknesses of their systems.
Wait til you play with custom snippets that do whatever you want, you can execute php basically anywhere on a page