I forget this, can be interesting:

Welcome screen
A mini welcome screen (450X250 aprox. Floatie) with messages of the day: accounts payable, accounts receivable, birthdays customers (marketing) employees, Manager Message, tips, etc.
Can see an example: Here

User Restrictions
1.-System Administrator (Full)
2.-Company Manager(full, but not setup)
3.-Inquiries
4.-Accountant
5.-Sales Person

Print Document
Buttom from the directly document

Some Icons for download Free Source: Here

One More Time, Best Regards and Good Luck Joe and Frontaccounting Team.

/Joe

Making 'user'
The user only restricted to sales (unlimited employes)
Initiate follow-up on this sales person to get a report back, Sales, orders issued, products sold, profit, time and days of entry into the system, etc.

Create field 'brand' and 'bar code'
the possibility of creating 'brand' and 'bar code' in the registration of a new item

Customize field 'Units of Measure'
the possibility of add/edit/delete 'Units of Measure' in the registration of a new item, previous add Units of Measure in 'setup'

Implement Calendar and Contacts
The ability to add / modify / delete "contacts" and insert picture.
It can be:
Customer
Customer-Supplier
Supplier
Another

Add More 'General Reports'
Brands
Items
Items (DateRange)
Employees   
Daily
Date Range
Profit

Create other 'Accounting Documents'
To internationalize this good software:
Allow Create other accounting documents (Here, in my country there is' ballots payment ')' ballots payment 'are emitted when the customer has no number RUT / CUIT / RUC / RFC / CUIL. (But is the same as issuing an invoice)

Integration with some modules GNU

1.- Improving the visual form of 'point of sale' and integrate it as a 'POS' module.
https:/sourceforge.net/projects/phppointofsale/

2.- Integrate for greater security 'admin' and register visitors to our software with this 'phpmyvisites' (This is perfect for track at retail outlets and stores in other locations outside the main area)
https:/sourceforge.net/projects/phpmyvisites/

3.- Or with 'Google Analytics' code.
http://www.google.com/analytics/

4.- Integration with OsCommerce or ZenCart
https:/sourceforge.net/projects/oscommerce/
https:/sourceforge.net/projects/zencart/

Skin
Add some fancy icons to disitribucion this beautiful visual software, the display does not change much because this, this perfect.

This is my modest contribution, Many greetings...