In a way I think that the hives are not a version of the tribes, I think they are rather a bit inferior, because the tribes allowed to share post with the use of the different labels, but the hives force that each post can only be shared In a particular hive, not being visible from the others, this could be explained as an attempt to better segment the publications addressed to each user group, but it does not convince me.
As it is a Beta, it's time to wait to see how it develops.