Glad to hear that! And yes, I’ll still add target groups.
Individual layer offsets are not supported or planned.
I don’t think that’s possible without interacting with the spritesheet layout directly, which most likely wouldn’t be compatible with e.g. 8-dir or “more character frames” plugins.
(The layered bitmaps are “baked” into a single texture, since not modifying the scene graph is by far the most robust approach.)