I would add understanding of social media too. It has become a must since past few years to have a substantial online presence. Personal branding is something that will take you a long way ahead. You can crash parties only once in a while, but in social media space, you can have real-time one-on-one interactions with almost anybody anytime!
I'm not sure if it is a problem unique to India, but here Angel investors are extremely risk averse. Other than looking at the competition, objective, market opportunity and potential, they focus on current revenues A LOT! Their decision of whether to invest or not depends almost 80-90% on whether you are making steady income already, and that I think is the biggest dealmaker/breaker than all other criteria.