They are converging, but I don't think that they are all here yet. ...and I think we're in the middle of pruning those members of Savathun's brood that are not worthy of being Guardians. Just like the Iron Lords did during the Dark Ages by getting rid of the Warlords. Lord Saladin said something (imo) that was very important during Psi OPs. I think it was Crow who was asking how Saladin dealt with having to put down the Warlords during the Dark Ages, and why the Traveler would raise bad people, while leaving good ones to rot. Saladin replied, [i]"I realized that it was the wrong question. Matters of good and evil are rooted in causality (cause and effect)." [/i] Which, once agian, drives home the point that the conflict between Light and Dark is not one between Good and Evil. But the conflict between The Vanguard...and our allies....and The Witness...and his....is shaping up to be one. ...and the choice of which side to be on in that conflict is an individual choice. Edit: When all is said and done, my gut tells me that Savathun will wind up being on our side. Her time in the City gave her a taste (once again) of what Life that isn't dedicated to endless killing was like, and she fell in love with it. Which is why (imo) the Traveler chose her...with the understanding that like our post-collapse Dark Age...there would be a period of chaos while the Hive Lightbearers were whittled down to those suitable to protectors of life, rather than destroyers of it. But there was a reason why The Worm Gods and the Witness moved to corrupt the Hive, and I think we'll eventually see that reason come forth.

Xivu Arath still has a large fleet coming with her. They were busy with the cabal. They are loyal to the witness and xivu arath will probably become a disciple like the witness wanted savathun to be. No more hive can be produced do to the worm factory being disabled. So they might make a new one or might have to use the remaining hive sparingly.

good question. im curious about the hive and other races including ourselves. that cutscene w/ the witness showed there are multiple travelers and there was one in particular that stood out from the rest. i can't say with absolute certainty what the architecture of the scene looks like. is it based on science theory or religious theology? maybe a hybrid of both, who knows. they leave it up to us to decide.