PSO for short.  It's a really good RPG game. has anyone here played it here before?  

just wondering.

I just finished reading harry potter 5 a couple days ago.  In my opinion, it is the best one yet

I have a good suggestion.  Perhaps along with Everous' idea (which sounds like a really good strategy game already) you might add POW's into the game.  when you attack, you might have certain units trained to capture high ranking officers (or perhaps even heroes) of the opposing army.  These POW's might be traded for more money or territoey from the opponent, depending on negotiations between the two players.  If negotiations fail, then the captured person may be tortured into giving out information on the opponents army, land, or locations of various buildings.  Also, the opponent might send in a part of his army to try to recover the POW(s) in question.