Drupal 7 version and feature request

Issue Summary

Hi I am also planning to use this module in school finance administration. But I need drupal 7 version with some more functions.. If you do not mind I would like to write some of my opinions and needs from this module.

1- Fee type table is really fine but adding fee default to everybody is not nice. Instead using groups might be matter. For example this is default for group A, that is default for group b and so on.

2- we can give special discounts to the members where we need a second edit of fee type. Also members would like to pay in 2 or 3 installments and fee type can be edit accordingly. Fees can be assigned as an invoice and these can be edited for discount and other options.

3- there might be a receipt section once the payment is done via cash, credit card or whatever.

4- program can print out the receipt and show payment history or even can list overdue ones.

Finally, I used php before and I am new in drupal. I would like to work together with you. I can share my ideas my tables and prepare the invoice pdf codes and so on. Unfortunately, I do not know a lot about the module functions.

I will be so happy if you accept :)