The State of Splitscreen

Can we get a statement on whether this is the intended implementation of splitscreen? Or is it this way by design?

It is difficult to join and navigate menus. All splitscreen players need their own Xbox profile (no guests apparently).

Splitscreen players are seemingly unable to participate in any kind of voice chat (game or party), and have super limited access to settings. Some of those settings seem necessary for normal play.

Can we expect this to improve?

I think anything resembling a splitscreen Halo get-together would be almost impossible.