Add different extension when you crop!

Is it possibility to add option for change (or choose other) naming on files when you crop.

At this moment when you crop, crop file have same name of picture + extension "_n" where "n" start from 0 (zero). Attached are sample when you crop more than one file than names of crops are FILENAME_0.jpg, FILENAME_1.jpg, FILENAME_2.jpg

It will be great if there are any possibility to choose how to named crop files or choose the start number (not start always from _0). Than depend of type of crops you can add different extension like (ad_1, ad_2, for ads, an_0, an_1, an_2 for annotaniton, art1, art2, art3 for articles or any other combinations).
This sample we use for media monitoring where we use crop to crop from one page different types of articles, announcements, ads, pictures etc .