First, games have specific styles of play. Theres a reason the Elder Scrolls community has been having a Cold War over Morrowind, Oblivion and Skyrim, because previously good systems were dumbed down for mass appeal, to the point that Skyrim borders on being an Action-Open World game with skills as opposed to the strong RPG that Morrowind was. Some changes were for the better, sure, but it lost a lot of what the fans were looking for.
Thats the issue with Sprint in Halo, because it doesnt need to exist at all for this style of gameplay. Call of Duty utilizes sprint in its sandbox to provide a strong tradeoff. TTK is low, so quick repositioning is dangerous when Sprinting. Its a tactical choice. Battlefield similary uses Sprint as a tactical choice, but its more for getting from A to B when vehicles arent avaliable.
For Halo? I cant figure out what the utility is. Its way safer than Call of Duty, vehicles are more readily avaliable in BTB, and 4v4 doesnt utilize it well because the maps are smaller, and spawns are incredibly dynamic. On top of that, weapons are generally pinpoint accurate at any range, so you dont have to ADS to defend yourself.
It is RARE in any game mode to have a long time before you get into a fight. Its sole utility in Infinite is to chain into Slide, but Slide itself is useless because of aim assist. Its great for the 10% at the highest skill ceiling who know other tricks, useless for pretty much everyone else.
Second, Black Mesa provides pretty much the best possible solution, because it lies to you. Anyone who has played Half-Life 1 knows that Gordonās default speed is akin to an F1 Racer.
Black Mesa has two settings in its options menu, you can either hold down the button to Sprint OR have it enabled all the time. In either mode, when Sprinting, you move at Sprinting speed in any direction and can fire your weapon. The toggle in the options is basically deciding whether you want to walk all the time or run all the time, though the Sprint animation only plays with button-toggle enabled.
This appeals to the zoomers who need Sprint in everything, and players like me who prefer to move at highest speed at all times. Neither option has any specific disadvantages, and can access either optionās default movement speed with a button press. If 343 were in the business of experimentation to, ya know, improve Halo, this is what they should at least try.