I don't know about you, but I think it would be brilliant if bungie implemented contagious diseases or curses to Destiny. For example, there could be a disease that slowly drains the guardian's health and level until they are dead. (no respawn) and whoever comes within 7 feet of the infected player will catch the disease. The ailment will carry over to other levels and instances, even inside of the tower, PvP, and even if you turn your console off, the ailment will still be taking effect. It would be like the "corrupted blood" outbreak in WoW, only much more intense. Also, the only way to cure it would to be to spread it to enough player's.