The way I understand it, in its thematic enclosure zones, zoo Zurich attempts to
represent specific nature reserves (or initiatives) it has cooperations with. It does not to my knowledge intend to
copy them.
I am a bit disappointed
zurich used to embody an ideal for me but after they managed to built one of the most accurate representation of a specific ecoregion,
From the very beginning, Masoala has also included non-Masoala species, e.g. Aldabra giant tortoises, red-fronted lemurs, or Goodman's mouse lemurs.
they got a bit off key with the savanna and the scimitared oryx antelope, noe golden lion tamarins when they phase out the capuchins.
see comments above
But foremost I thought they have learned from the attempt to mix carnivores, first the lion and small clawed otter,
They mixed small birds with the lions, which didn't end well with the birds. However, to my knowledge they never planned to and never have mixed the small clawed otters with the lions. Instead, again to my knowledge, the otters and lions share the same enclosures - but never simultaneously.
then the coatis that a sign stated to be only partialy succesfull and working alone because one of the island is reservered for the coatis alone.
The coatis and spectacled bears
do share the same enclosures and they do share them
simultaneously. There is no island reserved only for the coatis. However, the zoo appear to sometimes let the coati and bears into the same sub-enclosure and sometimes into separate ones. I have never seen issues with this mix.
But giant otter with free flying bird species along coinhabitants.
I have seen videos of them treating other spevies very harshly speak they killed them, not for consumption but they seemed to have felt threatened by other species near their habitat.
That is not progressive
I think you assume too much and would wait for more details on how the zoo plans the new enclosures before passing judgement. Also, I think you cannot reasonably expect a zoo to be both 'progressive' and try out now things and simultaneously to never fail.