There has been some ideas, to role play the Bundestag (parlament) of Rheinland, and do some forum politics, but it stayed with the ideas, cause noone really wanted to put effort into it.
The German President has mostly administrative dutys, and a veto right for new laws, so you can assume there is one in the rheinland government.
But especially in times of war (what we have in rheinland now) the government mostly rely on the executive powers of the kanzleramt.
Basicly Malexa runns rheinland in dictatorship, for a more democratic politic of rheinland, we would need a lot of people, to do it, a senator for every rheinland system, a representetive for the big corporations, and on, even the LWB and Bundshcuh hold some political power in rheinland.
Freelancer ist mostly a game of action, political roleplay could be fun, but i dought we'd find a lot of motivated players to do so.