As noted in earlier commentaries, it is a challenge to unite so many characters and make it appear natural. DC and Marvel have dealt with this issue on many occasions and no formula has come to the fore. What is essential is that the story be good and the characters serve the story and not just be an occasion for displaying their unique abilities.
In Artifacts #8 Marz has done just this. The characters are serving the story and it shows. Lets hope this serves him well.