Senate has no boost in money but Patrician does. In fact for pure income Patrician is the better of the two with both +1 per specialist and increased trade route amount and yield.
Slavery has boost in money too, +5% in all cities, Coinage does not and Coinage has +15% Inflation.
From No to Open Borders makes no difference in money unless NOT running on 100% Science. In your case you get some back from doing that change, but the loss from Patrician to Senate and from Slavery to Coinage is too much to handle.
The big thing to check is Inflation. Coinage gives +15% Inflation. Inflation Offset was not set so it can be very draining on a developed nation that gets increased Inflation due to Civics, especially if you had a decently high inflation already.
Cheers
Slavery has boost in money too, +5% in all cities, Coinage does not and Coinage has +15% Inflation.
From No to Open Borders makes no difference in money unless NOT running on 100% Science. In your case you get some back from doing that change, but the loss from Patrician to Senate and from Slavery to Coinage is too much to handle.
The big thing to check is Inflation. Coinage gives +15% Inflation. Inflation Offset was not set so it can be very draining on a developed nation that gets increased Inflation due to Civics, especially if you had a decently high inflation already.
Cheers