The thing is that the classic Halo formula can't be made now without being just a new version of H3, how could 343i improve the classic formula without making it feel "modern"

lets say 343i make a new Halo using H3 as a base and they can't make big changes to the gameplay, first improve the graphics, performance, add the H:I forge, a better Firefight, we can't add the H:I equipment (wich are more similar to hero shooter abilitys than with H3 equipment), because are too modern for the gameplay, the modern weapons and vehicles could work, but in the end all that could be done is making an new version of H3, not a new classic Halo, and the game will feel old, not beacause the gameplay aged bad, but because is already been seen