New kinds of sleep experiments can be conducted with a slighly more advanced sleep communication. These experiments could allow for experimenter-subject interaction, as it is used in many psychological experiments. It could be analysed, for example, how sleep consolidation of previously learned facts can be enhanced or manipulated with sleep communication. A more advanced experimental paradigm could be to interactively ask a sleeping and dreaming subject of what they are dreaming, when specific neural events measured by EEG or other methods are present. This way it could be investigated whether the consolidation of procedural memories during REM sleep influences the dream scenario and with which neural markers this occurs simulataneously.
These are only examples, they are not perfect, but might inspire the reader to think about own, better sleep experimental paradigms using sleep communication.