I'm hoping to see a few small attractions added to the park lineup for 2014, but mainly focussing on improving some of the existing rides.
Thorpe and Chessington seem to refurbish their rides every few years, adding more theming or just giving them a good clean and repaint. This is something that rarely happens at Towers.
The Congo River Rapids could be easily (and cheaply!) improved; it still manages to pull a crowd and adding more to it for 2014 would make it even more sustainable in the park. I think the station could have lots of theming added, repaint the station 'arms' no need to change the design, just repaint them, add some more ropes and chains to the station, with random things hanging around like explorers hats, boxes. Also lanterns could be included around the station, meaning no horrible festoon lights at scarefest, the same sort of lantern as those installed in mutiny bay, if hung from the station 'arms' would have the spotlights shining onto the station platform and the light in the middle giving off a gentle glow.
The tunnel could also be updated, install some lanterns, add a few water features, nothing major but would help to make the tunnel more exciting, also install a few speakers in there. A ride soundtrack could be added to play in the station, top queueline, tunnel and the ride photo shop, I thought Nemesis Inferno's theme suited the ride quite well and would add a whole lot more atmosphere to the ride. Also around the ride where it softens out and slows, install small geysers (the same style that are at PortAventura) these would add a great element of surprise and would be relatively inexpensive. Although, correct me if I'm wrong, but on seeing recent photos of the rapids it appears they have cheaply placed some boards over the top of the wooden design on the rapids station with the graphic printed onto it?
Another idea for improvement would be the Storybook Land tent, maybe not a new attraction for in there, but a large restaurant could be retrofitted into it. It's an ideal location and is large enough to accommodate a lot of people. Also, with the entrance being themed so well, the inside of the restaurant could be themed excellently, small twinkling lights attached to the tent, like a night sky, and 'trees' dotted about the edges of the restaurant, the menu could suit the whole family, perhaps selling something similar to Towers Family restaurant.