I think the small house and outside exhibit of the giant tortoises will end up just like the snake farm and the crocodile building: Closed down and demolished. And I also wouldn't be surprised, if they eventually cut off the small complex with small carnivores where the ratels are now kept just like they did with the former sunbear complex which also wasn't any attractive.
In fact, I just discussed some of these recent developments (new species and projects as well as removal of old species or complexes) with a friend who also experienced all of this. We both agreed that you just can never know what the Tierpark will do next.
Some years ago, of course you could have told me there soon will be Okapis in the Tierpark and they'll even plan to build a science and breeding station for Northern White Rhinos.
Or that the monkey house would soon be transformed into an inofficial Madagascar complex with a really nice mixed species exhibit with red ruffed lemurs, red-bellied lemurs, collared lemurs and radiated tortoises, with Coquerel's Sifakas and even with rarely kept nocturnal species such as Malagasy Giant Jumping Rats and Aye Aye (the latter even in a nocturnal exhibit).
And that is without counting the separate lemur station/complex with the lemur island, the walk-through exhibit and the breeding complex behind the scenes - not to mention the small island with the obligatory ring-tailed lemurs. But I don't think I would have believed any of it. Rather I'd have felt like this radiated tortoise: "What's actually going on here and where are all these fluffy fellows coming from out of nowhere?"