-- Dance steps and variations can be and often are used in more than one kind of dance, albeit sometimes with minor modification. It would be more work, but it could be very helpful to point up the most direct (and thbus presumably the easiest) such generalizations when presenting a step or variation. For example, it occurred to me that the most interesting and engaging tango variation of the other week could very probably be readily adapted for the waltz.
-- Presenters of variations and lessons may known that certain steps and parts (sections) are more difficult. In these cases, indicating this and offering tips would be a very nice enhancement of this wonderful resource.