Easier input of many invoices

I'd like to use GnuCash for handling my invoices, but there's an issue that stops me: the complex way of register an invoice (or many at once). I'd usually need to register hundreds at once and that is not possible (in reasonable time) using the menus and dialogs.

In current version you have to do this:
1. Menu: Business > Customer > New Invoice ...
2. Select the customer by clicking select, enter a part of the name, click search, select in the results list, press select button (far to complicated)
3. Click OK (an invoice specification tab is displayed)
4. Enter the details
5. Click save
6. Close the specification tab
7. Repeat from step #1 for every invoice

A better solution:
1. Menu: Invoices > Register invoices... (invoice spec tab is displayed)
2. Select customer by entering Customer ID (or by using the search dialog)
3. Enter the details
4. Click button "save and register another invoice" ( keyboard shortcut )
5. Repeat from step #2 for every invoice

The biggest benefity would be to register invoices using keyboard only. Clicking in menus and using the complex (but powerful) search dialog at _every_ invoice is simply not effective