The customization needs more depth, in my opinion. There were more options in Halo 4, by the looks of things. And for the love of Yeezus, can female Spartans look like female Spartans? They’re built like the males. There’s only slight differences. In Halo 4, they looked ALMOST correct. They could use a more curvy look.
Can an we be given the option change the voices of our Spartans as well?
Another thing missing is…leg armor? If I remember correctly, you could change this in halo 4.
I haven’t seen anything about player emblems either. Those will most likely be in the game though.