It would be great to have access to add a rubric to a third party integration assignment. Specifically, with Turnitin. While we currently use Turnitin, I would prefer to use the rubric feature native to Canvas. Should my institution decide to switch from Turnitin, I'd like the rubrics to be within the LMS and not the third party tool.
Currently, you can set up an assignment with a rubric and then switch it to an "External Tool" submission which will keep the rubric for application when grading. However, the rubric is not visible prior to a student submission (as it is with a regular submission).
While we can add a screenshot of the rubric to the assignment information, it would be ideal if the rubric could be available and accessible with an LTI tool.