At our University we have our own export format for the gradebook to make it easier and more convenient for our teachers to download the correct format that will be used in our campus management system for creating the certificates. 

Idea
We can add our own export format but unfortunately the order can't be changed without hacking the core, because it is taking just the first according to the plugin name. 
Our suggestion would be, as an admin, to be able to set a default grade export format you want to be picked as the one by default, when you are redirected to ../grade/export/index.php.

Fix

• create a new setting in the admin settings ../admin/settings.php?section=gradessettings
• make this the default export format for teachers according the admin setting

MockUps

see below

Result

As soon as a default value has been chosen by the admin, in each course this format should be chosen by default if a teacher clicks on Export in the grade report drop-down menu. If no default value has been set, the usual (current) order should be used. 

Pull request

We would like to "fix" this problem and create a pull request.