I have to be honest, I strongly disagree with this.
The Gruffalo River Ride Adventure is, for the most part, very well done and an improvement on the version of Bubbleworks that immediately preceded it, but only because that had fallen into poor condition.
Tiger Rock however, aside from the new show-piece tiger head, which already looks tired and dated, they completely ruined the theming after the first drop and the majority of other features now look out of place or in desperate need of a paint job. I much preferred Dragon Falls.
Walking Dead: The Ride too, ruins the ride in my opinion. It isn't suited to the hardware at all and it was much more enjoyable and fun to ride as X IMO.
Valhalla does not need to become a lifeless bland IP-driven investment, and I thoroughly hope it isn't in any way similar to Gruffalo, Tiger Rock or Walking Dead!