Geometry nodes - Image Texture node - make Frame an Attribute

I would like to use multiple frames from an Image Texture Node. Now I need to use node group with manually choosing frame for each node group instance.

Here is how Image Texture node looks now:

What I would like to have:

Here is related, unsolved question on blender artists with node setup to make more light into this theme: blenderartists.org/t/geometry-nodes-how-to-get-data-from-multiple-image-node-frames/1343371

I guess there can be some performance issue with my proposal, but if not, it would be awesome.