I have always love halo and i have always wanted something like choosing if i can use my assassination in first person or keep it in third sounds stupid but just an idea.
Hey OP, there is a thread here that you can use to discuss this:
https://www.halowaypoint.com/en-us/forums/6e35355aecdf4fd0acdaee3cc4156fd4/topics/first-person-on-everything/800a40fc-b0e1-4c70-a665-4fd8d7ae1795/posts