Hi Joost - thanks for the question. I'd be interested to hear how other institutions were handling this use case, but a simple approach is to enable 'unlimited submissions' on the assignment. The submission can be graded, and then if the student wishes to re-submit a second attempt, they can do so with the original assignment folder. This could be re-graded by the instructor, and the new grade published.

This approach doesn't put any restrictions on students re-submitting, though that kind of rule could also be communicated to the student through the assignment description.

Yes, this is correct - currently, doing this workflow within a single assignment means re-writing the grade, and Brightspace doesn't have a multiple attempts capability. One possible workaround is to preserve the previous attempt feedback/grade in the feedback field. Others create a separate assignment for the additional attempt, as you suggested above.

There is a PIE feature request for this very item - which suggests it is not a Euro-centric feature! The PIE item is: D4006 - and I recommend adding your votes and comments there, so we capture everything in one place.