Ok, then first of all, call this experimental or pre-alpha, so players know, what to (not) expect.
The general idea is compelling, like MindMystery said, the opening of the window on hover is just annoying to the tenth, just having it clickable would be the right solution.
Doing trading with alcohol/chocolate is not any better than using some kind of currency, if you really don't want currency, then create a bunch of other recipes like some iron vs iron gear wheels.
Another question: Is this mod supposed to extend the game or more like replace basic functionality? Like remove tons of recipes and add trading options instead to force players to trade? In the other case: Add discount trades? Like 1 gear for 1 iron (instead of having to use two iron plates to craft one). Or skip steps (still need two but instead of 2 iron plates, a gear costs 2 iron ores).
Or trading reduces pollution/evolution but is more expensive (3 iron plates for 1 gear but -10 pollution or so).