This can only be done through scripting or switching to using Sequencer Group Rolls.
For scripting, are you using Prime or Studio?
For Sequencer Groups; make a group in the Sequencer and set it's mode to Roll. It has similar settings as the SceneGroups do. And then put your 15 scenes in the group. Then you have template links for each scene. This method might not work depending on how you use your rolls.
#XPression