After Thirteen and The Smiler, SW have lost a lot of their excitement to me. They get over hyped by us, and Merlin Marketing seize on this and over market them even more. With the technology available, and resources people have, their is little kept secret about them. The planning restrictions and the cost of landscaping the rides eats up a large amount of the money available, leaving short cuts to be taken, and less desirable ride manufactures chosen.
I was hoping that we would CBeebies land expanded next year, with the relocation/removal of Sonic Spinaball but it looks like next year all we are getting is the Lodges, which as great as they are, is a little disappointing for the actual park itself.
This would leave 2016 for the CBeebies extension, meaning the earliest we could see an SW would be 2017.
As for the SW itself, A dark coaster/experience replacing all of Cloud Cuckoo land would certainly get my interest, using the new Mack Ride system. Could keep all the buildings, or try and get planning permission to increase the height to give it a bit more room. I expect their will be an IP attached to it, I can not see Merlin creating its own story.
Ian