Definitely, KMR. And I can already picture Collinwood sitting perfectly atop the cliff in photo #8. Now all we need is for Burton et al. to actually pick Ilfracombe.
Speaking of which, I was looking through some of the links on the Ilfracombe Galleries Web site and came across another Web site that has links to the Web sites for the various mansions located in the Devon/Cornwall area. Who knows if Burton et al. are even thinking of looking for a suitable Collinwood there so as to possibly be close to Ilfracombe (if indeed they do decide to shoot there), but the pickings are slim. Not that there aren't some great houses there, there are. But there's really only one that could be suitable for Collinwood because it's a Tudor. The others, like Antony, are either Georgian, or a style (like Victorian) that's much too late for Collinwood - well, too late for the backstories that have been used for the house previously. One of the Georgian mansions is HUGE, but Georgians are more suited to the era of the Old House - and if the Old House was as huge as that mansion is, there would have been no reason to ever build Collinwood.
Plus I somehow doubt the Collins would build Collinwood in a Georgian style (which derives its name from England's Kings George I through George IV) when the colonies had so recently fought a war against England.
But anyway, this is about the only mansion in the area (so far as the Web site links listed) that could serve as Collinwood:
National Trust | CoteheleCotehele HouseCotehele (Be sure to click on the two photos to see much larger versions.)
Though because it's a Mediaeval Tudor, the Depp/DS film would most probably need to go with a similar backstory as the '91 Series, that Collinwood had originally been built in England and then disassembled and moved to Collinsport.