I'd love to see some kind of restaurant make its home in the banquet hall of the towers.
not sure how easy it would be to do that... id just much rather see something like that than another ride. id also love to see a fully furnished room from once upon a time.
i think so much could be made from the towers rather than them just being "ruins"
I love this idea, though I'd go one step further and make it a medieval dining "experience." You could run hourly / 2 hourly sittings, each with a medieval banquet and accompanying medieval entertainment, possibly a show of some sort. It would be a fantastic addition. Add in some fancy dress, each guest putting on a medieval tunic or something similar upon entering, and the whole feel of it can be fantastic.
Anyone who ever went to the Christmas banqueting experiences at the old 'Tales of Robin Hood' attraction in Nottingham will know how good these can be. (And also that what I am proposing is almost a carbon copy, lol.)