Data warehouse support tickets
You might want to decompose the support tickets fact table into transactions; User w on Date x moved ticket y to state z etc. This would facilitate metrics like "bounced tickets" etc. which service desk managers always seem to be keen on. This could be supplemented with the Accumulating Snapshot table you already have. Look here http://www.kimballgroup.com/2012/05/01/design-tip-145-time-stamping-accumulating-snapshot-fact-tables/ for a couple of options to implement this scenario.