The way I understand it, the noise problem come mainly from the other side of the parc, that's why Pulsar was not so much of a problem either. But I might be wrong.Thanks for this extensive summary @KristofWB! It's very exciting to see such ambitious and comprehensive plans to be announced, especially for Walibi Belgium which has been neglected for over a decade. I'm quite impressed that they're not just adding gimmicky coaster prototypes but really going for solid rides as well as significantly improving the scenery. Sounds like some truly good park management!
So if I take the more conservative estimate, WB's hyper would be above 73m (240ft) which is the height of both Silver Star and Karnan. Only Shambhala, Energylandia's Intamin Mega and Red Force would be taller. That's considerably more than Goliath WH's 46m (151ft) indeed! I never thought a coaster of that scale would come to Walibi Belgium. Is is really possible with all the neighbourhood always complaining about noise though?
What an ambitious statement the park's management is making anyway!
For pulsar, I don't understand all the criticism, the ride has great reviews and fill a hole in WB's line up.
For the 2-3 higher and faster, I would stay careful. It may also be a figure of speech. Anyway, we can safely assume that it will be >60m. Someone from a french forum posted that they didn't pick the manufacturer yet, the height is probably not decided yet.