Apple Watch complications are too limited

Is it possible to add an item to the list of available complications within a watch face? For the Photos face, I need to use one of the complications to open the Workout app, but it is not listed in either the Top or Bottom complications lists. Setting up an iphone shortcut for the watch to open the Workout app isn’t possible either because the Workout app is only on the watch and can’t be built into a shortcut from the iphone.