I am very concerned about any changes to it. A HUD tends to be a very personal preference for people. Any changes could look good to some and awful to others. If they only have one in vanilla, it should be a mostly generic HUD as that will at least be acceptable to most people. Once you start making unique HUDs/UI, you start getting into situations where some people absolutely hate it. That's why those are best left to mods, imo. But if they want to have a generic one (either what we have now, or a new one) and also have one or more other versions you can choose from, then that's a good option.