Sending Taronga's males over was actually a thought of mine when I learned the facility had two enclosures. With three younger males arriving, there's the opportunity to mix and match the gorillas into groups that they feel comfortable in. The addition of three males would also benefit the troop dynamics if Fataki and Fuzu were to be re-introduced, so this is something to be considered too. As is the case with any animal, fighting can increase with the lack of other animals in the social setting.
Fataki isn't a valuable male and unfortunately related to all of the regions females. He's still of a decent age, so could be moved overseas to be a silverback if that's deemed the best move for him going forward.
The death of Fikiri (2019-2023) rules out Kibale joining his sons in a bachelor troop as he’s the most genetically valuable male in the region and they’ll want at least one infant to carry on his line. With this in mind, integrating them with Fuzu would surely be a good move.
Fataki could definitely go overseas. His maternal grandmother (Mintha) is a wild born founder and poorly represented, so there may be a desire to breed from him. Frala’s daughters have bred poorly and only have one reproductively viable descendent between them.