I agree and would also suggest, as a workaround for this request but also for anything else we would like to do that is not available in the Identify page, to add a link from the Identify page to the Observation page, here for instance:
When needed, I would right-click on this link to open the Observation page in a new browser tab.
In addition to the “add to project” use case, opening the observation page is also mandatory if I want to Delete an ID, because the ID contextual menu does not allow to delete the ID:
I was about to open a new thread to say that the Identify page should not accept a duplicate submission (typing “a” on the keyboard) of the same ID:
The result is not pretty and requires many clicks to be corrected manually.