Couldn't resist
Not voted yet but it'll be a no, I can't see all 3 Merlin parks in the UK having a topspin or at least something down the line in the topspin format. If it does happen I could see maybe a straight swap with Quantum heading to Chessie and RR heading to Thorpe, take out the water effects and maybe add some smoke and fire.
If anything, I think the next park investment will be a solid dark ride. Something I think the park has lacked since the days of WWH.