I am splitting issue SAK-33089 into two separate, related issues, since there seems to be a lack of consensus on how these two aspects of weighting can or should be accomplished within Gradebook.
This Jira deals with the issue of having equally weighted items within a weighted category. Currently, the only way to do this is make all items within the category worth the same amount of points. However, instructors may sometimes need to have items of different point values in the same category, while still maintaining equal weighting for all of the items in that category.
If this feature is added, it would allow instructors to designate a weighted category as having "equally weighted items" where Sakai automatically assigns an equal weight to each item, regardless of the item point value.
Since all items are weighted equally, the ability to drop/keep the lowest/highest score within a given category can still be used for items of different point values. Even though the point value differs, the weight (and therefore the effect on the overall grade) would be the same for all items within the equally weighted category.
See attached mockup for one way this option might be added to the UI.