My two cents worth in regards to a possible SE, is that we won't get one per se. The idea of a washing machine element will not happen. As previously explained TT 'knew' about the inversion record and at the time could not fathom where 6/7 extra inversions would come from - thus the idea of a washing machine element was put forward. A launch is also very unlikely for several reasons. Not only would this make the first part of the ride uncomfortable, it would be near impossible to run any type of duelling element. I would also say any 4D element on the cars themselves will not happen, I've no supporting evidence for this, but just think the level of maintenance required on any such cars would be detrimental to the smooth day-to-day operations.
My personal opinion would be that after the drop out of the station and the underground barrell roll, the car will move slowly through a room/chamber initiating the 5 Marmalisation elements that will later be triggered during the ride. Whilst this may not be the SE the enthusiasts desire, I think other areas of the ride outweigh the need for one. I mean lets not be fussy, this thing is going to break the inversion record, possibly have some of the most interesting duelling elements ever seen - all of which has been provided on a tiny footprint in major rollercoaster terms.
Good post. I also think there'll be something in between barrel roll and 1st lift - not a secret element as such, but maybe a special effects 'room'. They're obviously going all out on theme for this one, and there seems to be space for SOMETHING there (albeit not a washing machine element, thankfully). From what we've heard about the '5 stages of marmalisation', two of them sound soooo much like the '4D elements' on Nemesis- Sub Terra...
"The Inoculator - a jab of happiness as you pass by stage one of the Marmalisation process"
"The Tickler - aims to tickle you until you cant resist smiling"
- SURELY these relate to a back-prodder and leg-ticklers? And the fact that they're mentioned as 'stage one' in the process implies early on in the ride. My guess is that the 'secret element' or the 'world first' is this special effects room, where the 4D effects will be triggered, constituting of on-board effects and then some external effects. Any on-board effects would have to happen in this 'room' - can't happen mid-ride! (Having 4D effects on the trains would be a world-first, but then the inversions is world-beating, so this'd then make sense why Alton would use both terms!) I'd really love a launch to happen after, but probably unlikely.
Continuing in order of effects, it sounds like 'the Flasher' is a light under one of the 'spider legs'... and then we have the laughing gas (could be smoke in a pit?), and then we reach the Hypnotiser feature, which I reckon could be at the foot of (or even as you go up) the vertical lift ... it seems to tie in. Anyway, that's my 2 cents. Sorry, I've perhaps strayed into speculation, but just wanted to follow up the good post!