In my smallest cities I only very rarely ever post a cross tier trade if Im[sic] desperate for some extra goods to complete an event quest or something. I don't think it's a great game strategy personally, although I understand smaller cities often need to do it.
You really missed the point. I have a grand total of 3 factories in my city. One factory for each tier. I produce more goods than I need. Paying attention to
needs instead of wants is the point.
You want a glut of goods, and that leads to all these efforts to feed that gluttony. I want to move through the game as efficiently as possible, and that leads me to find the path that spares the most space and uses the fewest upgrades. I have 29 residences in my city. My plan for completing the orcs chapter has 10 of them remaining L19 and he other 19 upgraded to L21. With all the planned upgrades, I expect to finish the chapter with 3348 excess population. Currently I have finished my housing and armory upgrades and have over 6500 excess population.
On top of all that I am sitting on a glut of goods. My stockpiles grow towards 200K of each good. I average 37 KP gained per day. I will techlock myself in day because I will not perform productions that I calculate to be inefficient. Efficiency beats gluttony always. I will put my KP for the next week into wonders and that will increase my performance in tournaments to accelerate me farther.
I outrun so many cities that are built around the glutinous goods development that I have to laugh. I outrun cities with magic residences and those with magic workshops. If you want to stick it to Inno, then you should think about shifting towards my play style.