Manual Sort of Series and Columns

Currently sorting of dimensions/categories/series is by Ascending and Descending only.  There are times when such data points need to be sorted in a non alphanumeric manner.  For example, Critical, High, Medium, Low is the desired sort, but this appears as Critical, High, Low, Medium or Medium, Low, High, Critical which looks sub optimal to the user.  A workaround is to add a number prefix via modelling, again this is less than ideal for the user, as is a script to update the displayed values to remove the prefix.  As is possible with other BI Tools, there should be an option for the Designer to configure the sort.  There are various community plugins and scripts that do this on an explicit per widget basis, however these are prone to fail/break and aren't guaranteed or supported through version upgrades.  This should be a part of core application functionality.