Exposing Location field on Custom Reports

As custom reports are becoming very useful i am finding myself in need to use Location Field for a lot of reports
Production orders - Location ?
Quantity of the items sold to a customer - Location?
Quantity of items sold by location (tracking codes can be used but is time expensive)

is possible to expose this field please @lubos

I need that feature too
I have 14K plus inventory and more than 1 location
I need balance for specific location

This has been implemented now as part of the new custom report implementation.