@NZFanatic
TBH, I’ve forgotten what all this was about to begin with and that it’s getting a bit off topic but IMO, it doesn’t really matter.
1st, I’m pretty sure that the devs are well aware that people use the pieces for all sorts of things - irrespective of their name an intention is that they be flexible enough to be used for lots of things. For myself, I use the mesh fence panels a lot more for the tops of habitats than the sides- it’s a lot easier to use the barrier for those (as long as it’s not slanted, which is where the panels come in handy too).
2nd, my only point is that the panels (or lots of other things) can be used to make a habitat roof that would function perfectly well to stop animals, even flying animals, from escaping. Would a specific ‘aviary roof’ set make this easier? Yes. Would that be absolutely necessary if free navigation flying were introduced? No. Whether or not it’s finicky to build roofs with them (not very IMO) is not the question - the question is whether it’s functionally possible, and it absolutely is.
EDIT: irrespective of the above, I agree that Keas are probably best as walkthrough exhibit animals.