Separate the MCC installation on PC?

The whole MCC package is getting really huge, requiring 182.82 Gig of space.
I understand that steam version treat separate halo games (SP and MP) as DLC. But I am using Xbox app and I subscribe XGPU for both my Xbox and PC. There is no reason I should pay extra dollars for the steam version.
Every separate halo game in Microsoft Store is just a 10MB place holder, So I need to install whole 182.82 Gig to just play halo 3 MP.
Also I see someone online saying we can uninstall unnecessary parts after we install the entire game. Even if we can do so, I got only a 512 GB SSD and a lot of workload in it, It’s really hard to clean out of 200 gig space for just installing the game. I am sure I am not the only one who suffer this.
Please separate the MCC installation like what steam version does. Thanks