In my 9.1.4 testsystem i have this option

https://github.com/glpi-project/glpi/issues/2246

Solved with 9.1.1 or ? Only Projects is missing.

This is a profile setting: "Pre-select me as a requester when creating a ticket" to yes

I'm not sure what you want exactly but i think this is already done with 9.1 take a look on demo admin_en http://demo.glpi-project.org/ or my screenshot https://d.pr/VYBK