We form a bulgeless dwarf disk galaxy with linearly rising rotation curve in a full hydrodynamic cosmological galaxy formation simulation. The importance of feedback and the ability to better resolve star forming regions are highlighted. Implications for the next generation of Milky Way simulations are then discussed, and results from the latest, highest resolution simulated Milky Way galaxy are presented. A theme will be the relative importance of accreted versus in situ populations for each of the main components of the Milky Way.