You might not understand on some parts that I am stating but you can read ahead.

Short story, I've been seeing a lot of HUD add-ons lately, they modify either hudlayout.res or playerpanel resource file to add crosshair support, or they don't even add it at all. As for crosshair add-ons, I've seen a lot of them using hudlayout.res resulting in incompatibility with a lot of HUD add-ons, hudlayout.res also makes your crosshair show on the cutscenes and end credits which I don't really like.

One that caught me is the itempickup.res file where a very tiny percentage of people using it for crosshair add-ons, this works really well since a lot of HUD add-ons I tested doesn't include that resource file.

itempickup.res essentially modifies images that shows when you pickup throwables, healing, and temporary health items.

So my goal is to make crosshair support using that resource file to make sure it is compatible with a lot of HUD add-ons.

Overall though, it's not their fault for not integrating custom crosshair support to their HUDs, I mean who would know unless they browse the workshop regularly?