Trade
I'm not sure if this is with the beta or version 1.07 since I installed them both at the same time but the TC changes are making money issues become the most important issue in the game (besides BB of course). I like the changes, but now that it's become more important I think loans need to be revisited. I think inflation in the game is handled entirely incorrectly, but it's been easy to ignore up to this point unless you were in a WC game. I think loans should lead to increased interest rates, not inflation. Interest rates should be based on demand in your area (continent maybe) to penalize people who only take them in wartime (everyone taking out loans leads to higher rates). Also, multiple loans would raise rates, as would any defaults. I think this would lend an air of financial strategy to the game. I don't mind the inflation per se, but it's just linked to the wrong things.
Also, please review the merchants. I know how easy it was as a large country to dominate COTs but now it's too hard to even get into them. Maybe a sliding scale---easy to place your first merchant in any COT but getting progressively more difficult the more you place into that COT. I can't even keep merchants in my own COTs anymore. It removes an entire aspect of play from the game.