I hadn’t thought about it, but it would be easy to support editing Character Tags from Dynamic Characters too 🤔 (Dynamic Actors just references the tags from the other plugin.)
I added it to my to-do list.
By “inventories” you mean current equipment, right? The normal party inventory is out of scope for this plugin.
For fusions where one of the Actors disappears, I think the “Add” mode would be more helpful, followed by removing the “Source” Actor.
I’d probably implement “Absorb” so that an equipment isn’t taken at all if the target slot isn’t empty. Maybe “Drain” would be a better name for it.