Yup I agree. I was planing to add icons for each of them but we didn't have much time to create them and testing had a higher priority :P Because for a game like this everything must be balanced. An object or item should not increase or decrease more features than it should. Well, it's not perfect but i tried to balance them. In the end, you are right, it's obious, we don't need a bar for money xD
Thank you for your great feedback and rate !