I was thinking about Lawrence over McGeady too (marginal call), but I'd have had McGeady over Hunt.
I wonder will Folan's presence make it easier for Hunt / McGeady & Duff to find their man in the box, or create space for them to find others. Same thing from set pieces. In fact we could now have Folan, St. Ledger, O'Shea and Folan to offer a threat from set-pieces.
Doyle is good in the air but just isn't the potential handful that Folan could be if he plays well. They offer very different options.