Based on your explanations then the other team members will work like facsimile lives with different stats from your first character? Makes me remember those games with dynasties where you groomed an heir for when your general died.

You still didn’t answer if all players would fight together (and if so how to “distribute” each player function [everyone fighting or would there be, say, a place for a cloak and dagger approach) to conquer all territories or if it would be pvp-based (which could become pretty aggravating for the losing players). Beyond that, without the rules to analyze, I only imagine these:

How do you plan pacing the rp: How long would it take to acquire a territory to wage war against the others, would there be an emphasis on gaining favor or that would only be necessary to acquire the first land? 

If players can select their races and every country is defined by one, then obligatorily they have to start from their homeland? Wouldn’t a nation, with say, three territories be boggled down by rebellions of the conquered nations too much to have any army to spare to the front lines?

(maybe I’m thinking too much, besides the more variables a tabletop game has the more complex it becomes).