After I wrote this i thought about it too a bit, and I don't know if building units/deleting is very good advice

You really don't get much $$, the only time this is really handy I would say is early days when you might be trying to land grab or are in a war and have lots of units. 3 caravans at once just isn't enough sometimes even when the AI cities are close.
You run 0% science and your still $-30 a turn, in this situation building units to delete them is great. My fav is if a city is happy capped - build settlers and sell them once they're built.
I only did it in the game i was playing at the time so it was in on my mind.
Those carrack merchant ships are pretty good. Shipyard & some mines and you can pump em. Then also get some caravans going.
I always search for exploits or like try and just abuse little things when im playing vs AI. I don't know why just years of gaming - it kinda becomes like breathing lol
The WAY biggest exploit in this game at the moment in my opinion is, if you have tech trading on; I have just brokering off. I like how tech trading speeds up the game.
The biggest exploit is- Great Farmer- Horse, Horse, Horse, Horse, every 10 turns trade for TONNES of stuff - gold tech resources etc, then 10 turns later rinse and repeat.
Obviously you don't need to do the great farmer part. If you just have spare resources, cancelling trade and redoing it every 10 turns is a
huge exploit I feel.
This really needs to be patch - coz I just can't help myself LOL, emperor is tough and I kinda rationalize it like, AI gets there advantages.. I get mine
Is there a way that I can implement this change myself??
As in> trades are relative to game speed. 10 turns = normal, 20 epic, 25 marathon, 30 snail or something.