It does have a certain ugly beauty, doesn't it?
Well, as I said when first raising the issue of a twin seater - sure, it could be done, but with the recent upgrades & availability of podded tech being as it is, why would you need to?
I can't help but think that the 'looker' in the postulated A-29 / AT-6 IS the ISR fit! Those teeny little gunnery targets aren't going to be able to haul much in the way of sensors as well as weapons - again, not such a problem for the A-10.