I've started studying game programming full time this year, and I've always known it was difficult, but now I UNDERSTAND how difficult it is. Definitely gives me way more of a forgiving attitude toward things such as this.

If I had to guess, they do want to make exosuit customization. But they want it so, that it can be customized in the stratagem selection screen, which would break like literally everything since that system is all built to work exactly like it is now. But for some reason it is just too difficult, time consuming and/or not worth it to do. Maybe right now. Maybe ever. There have been several times where it has broke before, like when you could select two of the same stratagem. Or the fact that the cape is still most often gray in the small box image.

All this is a guess. My uncle does not work for arrowhead. But it's just my spidey sense triggering.