Manipulate SV image ingame

Looking for a way to add layers to my SVs.

I would like to update a top layer of SV depending on weapons held and possibly armor worn.

Static SV or animated SV? Necessary plugin dependencies?

The 6 by 9 grid.

I know you can replace the SV image for an Actor with certain script calls.

I would like to have multiple layers for each Actor. One layer would be main hand, a second off hand, a third armor, a fourth helm.

Trying to think of any plugin that would affect this. Maybe Yanfly's Equip Core? I imagine the script would be called through the Equip action.

the question was not for general, but for the plugins that you have in your project.
you need to tell the programmer who offers to write this plugin for you what other plugins you need this to be compatible to because of what plugins you're using (or planning to use) in your game project.
Becvause the more plugins there are to be checked for compatibility, the more work this will be - and you won't be able to keep this compatible to everything around.