Most definitely worthy.
I also have a suggestion for the game, such as a time clock. This way you can incorporate a daily income and maybe even work it in with the stocks. I would also suggest worker count and capacity and you could incorporate, more workers mean more revenue but also means more money to dish out. Also, lots, empty lots in the game where you can buy and open more stores etc. I you can even work it in there at NPC can also but lots or go out of business through time that would be cool as well.
Just some suggestions, I know there are limits and when it comes to getting that detailed things can get complex.