In Moodle 1.9 when you add a child course to a metacourse, it won't let you choose a metacourse.
In Moodle 2 when you add a 'meta course link' to a metacourse, it lets you select a course that already has one or more 'meta course link' enrol plugins.
Which would be really great! If that process actually worked In reality it does not: you cannot arrange metacourses like course > meta1 > meta2, you have to do course > meta1 and course > meta2, just like it always was.
I guess it maybe works for enrolments that are not themselves from the meta course link enrol plugin, but this is still a bit confusing.
Would it be a good idea to do one of the following:
1) Make it so you can't select, as a child course, any course that already contains one or more 'meta course link' enrol methods [Same behaviour as 1.9]
2) Make it so you can select it, but it shows a warning on the list to remind users that enrolments from the child's metacourse links will not be copied.