Well arbiter was pretty much my favorite character out of the series of halo. he was a badass to begin with and after all the stuff he went through he still became number 1. i'm just a bit more curious on why the covenant were helping the forunners. Also i'm pretty sure arbiter and the other Elites should have gotten wind of their own race pretty much aiding the promethians. So to me there seems a lot of questions that need to be answered, and as for the flood they were eliminated after we killed gravemind. ( which was pretty creepy by the way lol.) but i do wish that arbiter makes a return i do love the guy and the good elites helping out the aliens i loved. Also, hoping cortana comes back because she is awesome lol. but after what happened i dont if she will for sure but we all just gotta wait and see i guess.