Both Ta Lo and a Raya attraction would fit in well with Asia, that's for sure. I'd personally not mind a "Beastly Kingdom" based less around European folktales and more on myths from Africa, pre-colonial Americas, Oceania and of course Asia. Lot more unique to explore there. Could of course squeeze in a walkaround unicorn or something like that, though.
I'm however kind of against a Nemo land in Animal Kingdom because... there's already a Nemo land, in Epcot. TotW does kind of stick out like a sore thumb, being neither particularly Asian or prehistoric, which is unfortunate. Maybe the current updated Nemo is a stopgap until they can figure out something to do with it? Removing Primeval Whirl does seem like a good time to try to retheme Dinorama, if ever, and using the land TotW is on could make room for more Dinoland stuff. In particular, since Disney is going on ahead with making more media pertaining to Ice Age after the Fox acquisition, they could easily put an Ice Age themed ride in there, then say Dinoland is less about only dinosaurs and more about prehistory in general. I'd sooner prefer Ice Age in Dinoland than Indiana Jones or a Zootopia replacement, anyway, lol.
Sidenote... Kinda tired of the Donald theming going on in Dinoland right now. It was fun for the 20th anniversary of AK, but it's overstayed its welcome at this point.