Feature Request - Regarding Stock

Hi ,
The product is brilliant . If you add the following features quickly (Atleast in paid package ) , it will be great .
1. Seperate entity for customer & supplier
2. Expiry date control in purchase bill and selling of FIFO Stocks & Expiry stocks report.
3. Expence Bill
4. Net profit report after expences .

I felt, this product is for restaurant/bars , but realized , it's even good for reatil/supermarkets , provided, if added some more features .

Thanks