The hardest thing would be of which age to do it of, cause if you do the original you could add empires but if you did the 5th age you could have alot more areass... so you would have to choose a time frame in order to make the map work

you have to add more countries, think about making the way gate and surrounding grove a country, and maybe splitting the tower up more into more countries such as one for each Ajah, and maybe make the training grounds for the warders a country also, and split up the islandic town some more so that ...