I did kind of like what Nationstates had for aesthetics.
Religion: Voicing Fox Fire's response to this
Nationality: I do like this, you can set the percentages and such for who resides in your nation. Would really help the RP.
Currency: Since we don't have to bother with actual conversions. Why not
Motto: Approve
Parties: No opinion on this. For public appearance, could just show the dominant party for the nation.