Search and replace in batch processing of toolbox

[DuccioNotari]

on a simple tool of the toolbox you can use the "batch" command to apply the tool to multiple objects, and than use "fill" to fill all the fields that you need to be equal.. but this isn't useful for the output names...
I think it would be useful to have a "search and replace" tool in order to avoid tons of little modifications in paths and names!!!
i.e.
from  "..\raster_UTM\123.tif" to "..\raster_WGS\123.tif"
from  "..\raster_UTM\124.tif" to "..\raster_WGS\124.tif" etc.
M2

[JanBenson1]

I don't necessary need search and replace, but instead an auto-increment.  So if I am processing a large number of rasters, I would like to put in one output name, and then be able to increment to the end of the list.  It would save time.