There are some instructions in the following thread on how to use the XML posted here in your reporting instance. https://community.infoblox.com/t5/Reporting/Step-by-step-to-create-a-new-report/m-p/8641
There are no confirmed plans to change that option at this time, but there is an RFE "Under Consideration" which would impact it that is pending prioritization for a future release. I'm not sure if it's the same one you mentioned.
Hello, Do you indend to use the 1050-a for reporting?I don't belive there are any current versions of NIOS that will support that model. Infoblox "-a" models went end of support in December of 2015. -Roger