Account Financial tab - filters

Currently the Sales and Purchase invoice section of the account screen allows you to view:

Last 10 invoices
Last 20 invoices
All transactions

Where we have accounts with a lot of invoices, choosing 'last 20' doesn't show enough, but All transactions shows too many. 

I'd like the option of a date filter, so I can view all transactions in a given period.

This would ensure that I see exactly what transactions I'm looking for.