Equal control is more important than "superior" control. Again, Halo has been a controller FPS since CE. I don't see your argument. If it's so important, why would you even play Halo at all? If MKB is the 'reason' you switched to PC, you're really overlooking all the other advantages. MKB is not even the most important advantage.
Regardless of it's it been built to work well on controllers, mouse and keyboard are the superior input devices for fps games. The control it allows you to have when aiming is unmatched. Not having mouse and keyboard support would only be tolerated by the people that already like Halo and just want to play it again after all these years. If you want Halo to grow as a series it needs to adapt to PC player needs, which includes mouse and keyboard. I do not want to go back to playing fps games with a controller. It's one of the main reasons why I switched to PC in the first place. With Xbox getting mouse and keyboard support somewhere in the future and 343 being owned by Microsoft I'd expect Halo Infinite to come with native mouse and keyboard support on the Xbox as well. MCC may just receive a patch enabling mouse and keyboard support with the work that has been done to get it working on PC. If anything we're moving towards more mouse and keyboard support and less controllers.
So you would give up 60fps, better AA, FOV slider, just because you had to use the device that Halo is intended to use? Like the whole aim magnetism and satisfying shooting mechanic was built for the controller since CE. By introducing MKB you just create a forum argument nightmare and probably separate playlists which isn't good for matchmaking.
Halo has always been a controller based FPS having pioneered it. While having input parity is nice, why not just lock the PC version to the controller as this is "the way it is played"?I feel as this would annoy people as PC tends to be more Keyboard and Mouse based. As much as Halo has been on Xbox, bringing it to PC means adapting to PC players needs and wants. This includes FOV/POV sliders, different graphics settings, and mouse/keyboard support.
Personally, if I was forced to use a controller for MCC on PC, I would be rather disappointed and honestly, would not purchase it. Might as well go back to Xbox if that were to be the case.
More and more people are moving their PCs out of their dingy corner desks and under their TV. I think you would sacrifice more by spitting the community than just using controller input. Then again I think Destiny balanced it well (controller has mild aim assist, mouse has none but also no recoil)
Mouse and keyboard and controllers can never truly be equal while still keeping it fair for the mouse and keyboard folks. Strong aim assist and bullet magnetism would be required compared to mouse and keyboard which wouldn't be a fun experience for either parties since it takes control away from the controller user and makes it feel less 'skillful' on their part while PC players would feel cheated because controllers get a large amount of aim assist. Giving controller users an acceptable amount of aim assist wouldn't be enough to make things equal and would just swing things in favour of mouse and keyboard again. People should be able to play with a controller if they choose to do so, but they should not be given unfair advantages just to keep up with mouse and keyboard users. Most people on PC play shooter with a mouse and keyboard and it should be the main focus for the PC platform. If consoles suddenly got mouse and keyboard support it'd be another story, but mouse and keyboard are an established input device and should always be the assumed default for PC shooters.
Whether or not Halo has been a controller fps or not is irrelevant to PC. Every shooter has the potential to work well with a mouse and keyboard due to the nature of how aiming works with a mouse and keyboard. Changing a game from a gameplay perspective to work well with a controller is more difficult than changing to work well with a mouse and keyboard since aim assist and and making sure people don't move too fast for controllers to keep up are a big part of making sure things work with controllers. Controllers have their advantages, mainly in games where precise small player movements are needed, which keyboards aren't great at since it only has an on and off mode as opposed to controllers where analog sticks allow you to have a great amount of control, but fps games are not one of these games. Fps games work better on mouse and keyboard because you do the aiming with the mouse, not the keyboard. Lets take console's biggest shooter for example. Call of Duty. This game has been built to work well with controllers and appeal to console players. CoD still works better on PC with a larger skill gap. Why don't people play it then? Because there's so much more competition in the PC space and the simplicity of CoD just doesn't keep people's attention like bigger, more complicated games do. Halo's gameplay is a lot more interesting and could easily transition over to working really well on PC. It'll probably be much more successful at holding a player base because of this.
Why I would play Halo at all if mouse and keyboard are so important so important to me? Funny that you assume that I play Halo anymore. I don't. I want MCC to bring that back for me, now with the PC features that I quite honestly can't play without anymore. 60 fps gives me a headache. I'll get used to it again after a while, but why should I have to? less than 100 degrees of FOV gives me motion sickness, so console shooters are basically a no go for me anymore. I can't go back to playing Halo on console even if I wanted to.
"If MKB is the 'reason' you switched to PC, you're really overlooking all the other advantages. MKB is not even the most important advantage."
Mouse and keyboards is ONE of the MAIN REASONS, not the only reason. Mouse and keyboard suits the kind of games I play better than controllers do. I love fps games and always have, so I decided to invest in a PC. I was still playing on a 60Hz monitor when I first switched to PC, so it wasn't for the higher framerates. I was playing on a fairly low-end PC at the time, so I wasn't doing it for the graphics either. Now it's a completely different story. I don't need you to tell me about all the advantages of PC. I've grown accustomed to them and, as I said in the previous paragraph, can't game without anymore.