The 23andme video had depression, Bipolar, ADHD up there on their whiteboard with diseases like Rheumatoid arthritis, Multiple Sclerosis and such. However, there are no Specific genes clearly linked with any of these mental disorders, and their etiology is most commonly defined as multi-factorial, more like coronary artery disease and obesity. You need not just the genes, but also various triggers, including environmental and psycho-social stressors, all acting together (or separately) for someone to develop a mental illness. While there is no way you can ignore the complex genetics, oversimplying it might be risky.
On the other hand, the implications of creating a genotype database for pharmacogenetics might be more significant and far reaching.
All that, from reading one chapter of Essential Psychopharmacology. I must rest.