I really don't see an Odysseus ride happen actually. there isn't really a lot of room anymore in the vicinity of Ithaka. Even if they were to remove the rope course they would still not have much room to fit a new path connection in between all the theming, rides and queue for Troy. Also, Scorpios already kinda covers the load when it comes to attractions themed to Odysseus. I mean it technically isn't themed to Odysseus specifically, but that connection comes naturally when you add a boat ride to en area themed to Troy. Although I really like the Troy area I can't see them adding anything major to it anytime soon. I imagine their next big project would be another new themed area with most likely a family attraction. It would probably make sense for this to open in 2021 since it will be the park's 20th anniversary by that point.
Well, Strange that Toverland still got the idea then.
Lack of space?
The solution: an elevator instead of a lifthill.
Even if it's not gonna be Odysseus themed in Troy Area/ Ithaka, then I'm sure the Mack Supersplash will be a possible addition in a new area around the second lake, together with a darkride as family attraction.