I just hope the next patch includes later start dates with more built up holdings. I feel that if I start in the current ones the AI will never invest in it's holdings, like CM and TOG starts.
They do. However, there is currently a huge anamoly where the boonies are usually the most well built regions, and the capitals tend to be woefully undeveloped. A lot of this is due to the fact that lower ranked nobles tend to have nothing to spend their money on except internal economic development, wheras the higher ranking nobles tends to only spend money on fighting which leaves none for internal devleopment in the King's demesne. This is a vanilla problem too I believe.