We already have the option to change the country flag,name of the ruler,picture of the ruler,and the title of the ruler. However,I would like for an option to change the Country's names too. Because,for example,if you are Austria Hungary and conquer Germany,would it be appropriate to keep calling the country 'Austria-Hungary'?. I think not. Besides,it will help roleplaying too. We could have nations called 'Central European Federation' or 'North African Empire' or 'Republic of North America',etc.
I just hope people do not start calling their country stupid random names like 'potato' or 'gringoland'.