Created per team request in PTR-2117:
Currently, due to
LPS-100466, fragment collections are listed in a set order of system fragments, inherited/global fragments, and then site fragments. This means that the fragments created by the user will always be listed after the Liferay provided fragments and are therefore more difficult to find – particularly in the page editor where the first three Liferay provided fragment collections start in an expanded state. Being able to customize the order in which fragment collections are listed, particularly in the page editor, would let the user visually prioritize which fragments they'd like designers to use more as well as make it generally easier to access their own custom fragments.