Ingame ideas.

[Creativewax]

Implementation:

1st.
When starting a new game on ''New Farmer'' mode you start of with a few tractors.
Maybe its an idea to implement an spec sheet in the ''Vehicle overview'' tab in game (like in the store) . in means of a drop down menu when you press on a (for example) tractor.
This way youve got a clear overview of what the specs of your tractors are. instead of going to the shop and remember the name of your vehicle.

2nd.
Put a (remaining) timer on the discount tab. I sold something in order to buy a discount. but after i sold the discount was already gone.