You can select multiple inventory items and right click to view their "Properties", in one nested Properties windows.

I would like two options here:

1: Batch Name Search & Replace

I have the need to change several script names from "somethingSomething -nWM other thing ThinglyThing" to the same name, but without the "M" in it.

So to do a batch rename replacing "M" with "".

2: Batch Permissions Settings

You already know what I'm going to say here...! One master set of permission checkboxes to set them all, and in the darkness bind them! (yes, i know this doesn't affect in-world permissions. but don't forget about body parts, system clothing, eyes, sounds, animations, scripts, eep things, physics....!!!)