I propose applying machine learning techniques to publicly available human transcriptome data to identify specific biomarkers for COVID-19. These markers can then be incorporated into a rapid qPCR based diagnostic test.
What advantage would this have?
It is currently known that it is not the virus that kills you, but the host's own immune system causing a cytokine storm. The advantage of building a host-focused diagnostic is that it may be more predictive of severe disease and death than a pathogen-focused diagnostic.