If I'm understanding you right, while I think the ability to export and import combined amp-cab pairs might be useful, I don't think it's a good solution for FullRes on mk 1, or maybe for anything except sharing presets with others, and it's not the best way for that either IMO.
You can use a single IR in multiple presets. If every preset comes with its own IR, that's much less efficient. That's especially true if they're huge.
For the sharing side, I'm much more in favor of presets referencing IRs by their actual content (probably a hash if it), rather than by position. That would let you reorder your IRs without breaking your presets, and would let you import anyone's presets as long as you had the right IRs somewhere, not necessarily in the same position as the person doing the export.
That idea has been discussed before, and I really believe it's a good way to go. I hope Fractal agrees, and just hasn't got there yet.