Maybe click the chain link ?

I have previously copied layers into a very wide canvas (with transparent room between them) and after the run, and cut and pasted back to layers. It was not BRL
but if BRL will work on the alpha to selected areas it might be an option for you!
How large are your layers?

Yes, it makes sense. Are you doing a font?
I modified a program to run layer effects on each of the 90+
font named layers. Maybe that would work for you.
I could try putting brl in there instead layer effects.
Maybe that would work.

No, you may have already used this plug-in -- the one where you pick the font
and it generates an xcf file with individual layers. Sorry, at work and
don't remember but maybe called font to layers.py
I modified that program to add the layer effects onto the characters layers also.
Has an issue with one of the layer effects, but not the bevel/emboss. I think
it was pattern overlay does something to the layer size and crashes.
The other issue being it merges the effect to the font at each step,
so it doesn't look as good as doing them by hand. (the layer effects will
create layer groups if you don't set the layer effect to merge,
and the font to layers script doesn't deal well with the layer groups). --- Unless I am doing something wrong with the Layer Effects and there is a setting somewhere to tell to just generate new layers and not the layer groups.

2 scripts that do the same thing. But I wrote the one in scheme because i want it to be SCROLLABLE diaglog input window.

Bevel Reflect Logo to visible layers Script for GIMP (scheme) (SCROLLABLE)
Bevel Reflect Logo to visible layers script for GIMP (python) (NOT SCROLLABLE)

I've been running the 3D Bevel script, manually for each layer, on a file having 70-80 layers. It's a pain, but until I can find a way, it's the only way I know how. I too would be interested in this.

What or where is the 3D bevel script?
I can just make one for it to execute layers.
But Wallace asked for script that would be able to execute last used filter on visible layers. Such a script could be possible if i only knew where GIMP saves that last filter used and parameters used for it.
If GIMP does save that information some I hope it does it after the filter is executed and not before executing it.
Because if it saves it before executing it, then if such a script can be written it won't work because then GIMP will think that's the last filter used. and would execute the script so the script would have no chance of knowing the last executed script...because it would be itself.

Maybe it could be written to just apply CTRL + F or the current KEYBOARD SHORTCUT being used for apply the last filter? Then "ARROW DOWN" to apply it again to the next layer until you reach the bottom most layer? Not sure if you can code keyboard shortcuts or not. Just an idea.

There is a way to create 2 "COLUMNS" in Python dialogs utilizing Bytes and Pixels gimpfu.py file.
viewtopic.php?f=9&t=4292&start=80#p55308

I don't think i can code keyboard inputs. I was thinking user could use ghost mouse to just record down arrow key and ctrl F but then you don't know when to stop the script as when you hit down on the bottom most layer you're still on that layer so your ghost mouse script would have to be copied the number of times and it's also blind to visible/invisible layers.
That repeat last filter has to be saved somewhere in GIMP I mean where else is it coming from right?

Sorry I didn't respond sooner.
Here is a link to the thread that has the script download.
viewtopic.php?f=9&t=14188&start=9

I tried to write with bevel3d and that bevel3d script is weird, it's not atomic like i expected. i called it on 2 visible layers and it seems that the latest layer overwrites the result of the first one when called in script. but when i manually call it twice i get 2 extra layers. It's confusing the heck out of me.