Thorpe should use their partnership with Lionsgate as an advantage. The Hunger Games is a massive film, so why not make a ride/ roller coaster themed on that? It may bring out fans from the states, and maybe get actors from the films (Jennifer Laurence in TP!!) to go there. It sounds a bit far fetched, but it would be good. Also if there were to be that theme, you could have a flying coaster, so you can 'fly' like a mockingjay.
And people might kill me for this, but if they want something cheaper, what about a simulator which is great for families (Lower height restriction etc)? I don't like them, but it is an option they might take. I also do not like their new family theme, as Chessie and Legoland are just down the road!