Option to delete(reset to default) specific resources with nova quota delete

Hi All,

There is no command in nova(or any other service) to delete specific resource.
Nova quota delete command takes only project Id and resets all the resources corresponding to the service.

Suppose I have updated ram to 7777, vcpus to 10, cores to 5. Now after few days I want to reset ram and vcpus to default then i have to update ram and vcpus to default using nova quota update. If I do nova quota delete, there is no option to mention these resources(it takes only project_id). It will delete/reset all the resources for that project.

I feel If nova quota delete also provides option to mention which resource to delete(reset to default) then it would be better.

Thanks,
Ashish.