Erm...as a senate you won't have the power to order around people like the senate once did to you. Sorry, no sweet revenge and proper manipulation of the patriotism of your fellow country, just like you couldn't manipulate the faithful Catholics as a Papal faction in MTW would do if it was A.I.

It is also bugged and I never heard of anyone ever winning the game.

There are also reports of random CTD's, though the consistent "senate tap" one is there no matter what.

Nonetheless, an RTW game doesn't need to be finished, and it's helluva fun to just going around crushing enemies to pieces with your veteran army from the start.