Hi @Quander,
Just for the clarity of anyone who comes across this thread, I know your suggested steps not work in my institution's instances of Canvas. I think your steps would only potentially work in the following scenario:
- The tool is deployed at a course level (not an account)
- The "Allow LTI Placement Toggling" feature option is enabled
- The teacher role has the Manage LTI -> Edit permission.
In my opinion having all three of those things be true is going to be pretty rare, but not out of the question. Even when they are trie, i'm not sure that the LTI placement toggle is going to work to change the default setting, but I don't want to say that with certainty). In general, I think the only placement where the ''default' parameter makes much sense in Canvas is course_navigation, because Canvas has a UI to let teachers customize their course menu.
Happy to hear other opinions on this or even that I'm completely wrong.
-Chris