At the moment org-element-adopt-elements always appends the new elements after the elements original children. In many cases one might want to append before the original children.

I want to propose adding an argument to org-element-adopt-elements that defines if the elements should be added before or after the children, i.e.

(if append-before

(nconc children (org-element-contents parent))

(nconc (org-element-contents parent) children))

Would this be okay?