If I were in charge of the CE Remaster…
If Halo Studios is truly going to remaster Halo CE, they should take the Halo CE missions and expand them. Keep the mission objectives the EXACT SAME but make the combat/exploration areas bigger. Give players the ability to explore new areas if they want to while still being able to complete the missions exactly how they could 20+ years ago.
Best example would be the 2nd mission. Make the canyons bigger with more satellite areas and add more life pod crash zones. Players wouldn’t necessarily have to visit these to complete the mission but it would give them the option to.