I can't believe there have been threads about this for years and this incredibly basic functionality doesn't exist without having to create a bunch of measures or columns or new tables and relationships. This is one of the biggest limitations I encounter, and it significantly impacts my work.
Again, another basic feature is missing. For many representations on stack chart, it makes sense to have the largest bar at the end and then go from largest to smallest. Kindly, get this feature added.
Critical functionality where legend consists of categories, and some are deemed more important that others (or occur earlier as part of a workflow) - adding number prefixes to categories (e.g. 1_xxx, 2_xxx), as a work-around, is very ugly.