Note: If my proposed solution would indeed work as advertised, then one might also be able to solve the problem today by:
* Exporting to temp location
* Moving to final destination by wiring up a little bat/script file as post-export action.
I don't think that would work for publish services without some more effort, but might work so simply for reglar exports.
If anybody tries that, I'd be curious the result.
Cheers,
Rob