if the bijus would suit optional a relationship to humans , i would prefer these people :
Isobu/ Suigetsu ( maybe he gets a chance after the war and works for his village )
Son Goku/ Kitsuchi
Chou Mei/ Temari
Gyuuki/ Killer Bee
so every village has 2 bijus except konoha, but they have naruto.
the chance that somebody tries to collect the bijus again would lower due to the fact the jichurikis are safe in the villages and their bijus won't cause any trouble.
Do you think there will be a new generation of jins or the bijus will be free ? ( dubious because they are so big and so a good target)