Well, I just looked through all Kymon / Order have to offer and tbh I cannot see anything that looks appealing to my 2 x Exterminus Pyro. Maybe Kymon Will.
Maybe there is something crucial that I am missing but to me it looks like it makes no difference in this case who I choose - any suggestions please?
Generally for Fire, Lightning, or Chaos, go Kymion. The rest, Order. IMO. Also, when you speak to them at Homestead, you can ask them what kind of gear they offer, and their answers should guide you for each build.
At the end of the day, you might want nothing from either. Or, you might want Order’s Augments…But also want to get the gear of the Order’s Nemesis boss. Or vice versa. In those cases, you get Revered on Elite with whichever, stack up on Augments and things for that character, and then betray them in Ultimate, to get the Nemesis rank eventually.
You don’t get much from either
Just pick the faction whom you like. You have two options
Pick any one 