Since we know the Infinity is heading towards Requiem, where the MC inevitably ends up, I think it’s a fair assumption that we’ll run into a Spartan IV or two, considering how many are aboard the Infinity. Keeping that in mind, I was thinking; what if 343i gives one of them the appearance of your MM Spartan? No dialogue, so that it doesn’t ruin the way you’d imagine them to sound (unless we get to choose a MM voice this time around, like we could for firefight).
Personally, I think it’d be awesome! I’d love for the two to be interconnected like that, especially since they’re trying to give MM canon-ity.
Lol, I’ve been saying this same thing, and I hope with every fiber of my being that I get to see my spartan along side the chief in a cut scene or two, the tech is there, proven by reach. So o honestly feel pretty confident that it’s totally possible 
Dude. Dude! DUDE! This would be extremely awesome. A cameo from our Spartan IV, just standing in a group of other Spartans.
Excellent idea.
> Dude. Dude! DUDE! This would be extremely awesome. A cameo from our Spartan IV, just standing in a group of other Spartans.
>
> Excellent idea.
You could even have an actual supporting character wear your spartan 4’s armor. it is possible that the chief meets a more significant new character, so it might be cool to modify their armor… might…
> > Dude. Dude! DUDE! This would be extremely awesome. A cameo from our Spartan IV, just standing in a group of other Spartans.
> >
> > Excellent idea.
>
> You could even have an actual supporting character wear your spartan 4’s armor. it is possible that the chief meets a more significant new character, so it might be cool to modify their armor… might…
I’m not sure about that. Then it stops being your character, once 343i imposes a personality over it. Now, if we we’re just the silent sidekick and followed the MC through a level or two… Would be cool.
I like that thought. So if a Spartan IV were to be a key character within Master Chief’s story (campaign) it should be your MM character. This really does sound pretty awesome to me. Being able to edit your character’s voice makes sense if they were to interact and speak within Chief’s story. Picking a male or female voice, selecting between multiple accents, and given a slider tool to adjust the tone (deep - high) of the voice. I liked that Halo: Reach reflected armor changes in the campaign, so this would be taking that idea and working it in a little differently and possibly with a little more detail (vocal changes).