Alton towers do need to invest in some flat rides. Possible developments in the coming future in my opinion,
I think over at the dark forest they need something. To tell a story of the forest, the girl, rita and the wraths. With live actors and some awesome 4d affects like this video http://youtu.be/P2XkRn_pAQI
Also with a bit of terminator effects to http://www.youtube.com/watch?v=TomF7huaxFQ
the area is lacking something and it is a scary story telling flat ride.
Duel I can see going as it is dated and rubbish flat It's so gimmicky now, i visted last week for two days and I didn't even bother with it. They need to re theme the area badly and it needs most attention I think.
X sector aswell is lacking a flat ride, I know the smiler has just been built and now it needs a flat to build that story as most people who visit don't even know who dr kellerman is.
Charlie will be re themed to a new child's book or possibly a alton towers own story maybe of sir algernon and his voyages??
To other rides
As we all know the flume is falling apart needs to be scrapped, they should build a water-coaster ( sw8/9/or 10) or do a new flume.
Rapids should get some much needed tlc, include some new scenery and effects to get you wet.
Ripsaw should go along with the blade. Two new rides in its place.
spinball whizzer to be sold off or moved and sw8 in its place.
New sw9 by air.
Development of new hotel by 2017 latest
Wise men say.........