Multiple blocks, multiple presets

I need to use the "Taxonomy Image: Node Images" block in different contexts: i.e. different themes, different imagecache presets. I can easily control the block placement on a per-theme basis. However, the same block configuration (same preset) will apply across all themes. Ideally, I would be able to define additional TI blocks as needed... (IIRC something like that is done in adsense module). Would that be a reasonable feature request? Are there other non-programming solutions? Thank you.