Is this much different to what @Secrop implemented a few years back with his loop node. This could be used to iteratively overlay successive textures of different scales or different levels of detail - but was more generalised in it’s implementation so could be used with all textures and nodes (and could mix between them).
This was implemented as a python node - but given how geometry nodes have evolved to include iterative solving - would Secrop’s approach better fit the direction Blender is going in?