Hi Simon

I can't think of a way to launch after completing a SCORM activity.

It is possible to have conditional access an activity based on conditions in another activity http://help.totaralms.com/Restrict_Access.htm this doesn't automatically launch the activity but makes the activity visible.

Another alternative is to use a lesson with a pathway  depending on answers to questions - http://help.totaralms.com/Lesson.htm this doesn't allow inserting of SCORMs though

The other possibility is to include the survey or other activities as part of the SCORM so the SCORM controls the pathway.

regards

Craig