Thanks for your help,
ya i expected that there would be differences like that, the income being based on, population, squalor, and all sorts of new realistic factors that make for more opertunity. In MTW there aren't any population, squalor, or tribute factors. And, even though you could mod so that any building will give you either a set amount of income or a percentage upgrade, the income consists strictly of trade, farms, cathedrals, and taxes, (and occasional tributes from the pope). But as long as i can change the trade income that will be great.

In the case of the countries diverse investments, i remember that in MTW i was able to assign different buildings to different AI using the Building_prod.txt. Then i could change the AI in the startpos.txt to make the muslims more agressive and the Bysantines more defensive. Is there by chance, a file that has an simple AI change like there was in the old starpos.txt under ::SETFACTIONBEHAVIOR?

Changing the building prices and support costs is a good idea. In the MTW we were able to change any building properties through the unit and building prod files again. We simply had to change the 3rd collumn to a factor that would be compared to the unit size. If i wanted to change prices and support costs, how might i do this? What i particularly liked about MTW prod files was that they contained every possible property for each building, so when you knew which collumns stood for what, and with the help of Gnome editor, i could use different combinations of properties to create unique buildings: give small incomes to ports and merchants, give negative income to some buildings, and use buildings to represent polocies that effect province statistics and give offices. is there a file like the Prod files, where i could change many properties of the buildings?

I noticed durring the game movie, that there were units of about 150 men it seemed. I much perfered those numbers to these default handfulls, which better represent a small tribal comunity, than the whole of Germany. In MTW it was possible to change the unit size by a option slider. in the menu options under game options, we could choose from 5 options that allowed our units to be from 60 spearmen to 133. Support costs would be affected with this scale as well, because they were determined by a basic integer. Now i could probably change the unit sizes in the scripting, but it would be much easier if there was a unit size option. I couldnt find anything like this in the RTW preferences on the main menu. Has anyone found a unit size scale? If not i might result to changing the scripts for the units that i must have larger where might i do this.

Thank you for your thoughtful answers, i cant get over how fast these responses have come in. hopefully other previous MTW modders can benefit from this thread as much as i have