HUD - Heads Up Display

Um okay so this is how I'd think the HUD for my game can look like, and I'm going to point them all out just wait though, cause I need to ask you something, okay? in the game, I was thinking about adding the 4 player co-op feature, but I'm just not that sure on it though, so I'm asking you on what you'd think on that, should it be added or not? (and I want your complete and honest opinion, don't just be an idiot and put "yeah man, do it" ) and if yes, I'll keep it on this pic, and if not, well I'll just delete those extra slots you see alright down to business.
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Main HP/MP (and other stuff you see) - basically your display on keeping track of your health and lives, and you'll also notice that there's a fist in the center of it, well that things know as the "Weapons Display" and right now, the player only has nothing equipped, (guess he or she should focus on finding weapons and stuff)
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moving on...
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Cash - Which is one of the most important things you'll need if your going to buy ammunition and weapons you can also use it to buy new looks for the character.
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Ally - Now this feature will only be enabled when an active mission is on, and basically, during active missions, some of them will automatically give you an ally (or a "Quest character" if you may call it) and you pretty much just have to keep him or her alive, cause if you fail? then you'll have to restart the mission (which can also be a major piss off sometimes :I) so stay sharp.
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Boss/Structure Health - This will only show when your fighting a boss, or keeping an objective structure point alive.
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Experience Points - The stuff that can make your character stronger (except when you start on a new character) you gain these by defeating enemies, finding hidden areas, and completing missions, but beware, there are certain types of missions and bosses (and mini bosses ) that can be one, two, or even three levels ahead of you, and when a skull is shown beside their names, don't even try to beat it (you can if you want, I don't really care) so be sure to get some "Side Quests" done.
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Other Player Slots - Now this is the one thing I'm not really sure on adding, but since it's in the pic, I have no choice, but to explain it (like I even do but still) the names of the "Gamer Profile"s and their level progress will appear on the top right corner of the screen (sorry about putting it on the center but I needed room ) it can also keep track of their cash (sometimes)
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Objective - Basically keeps track on what type of mission your doing, and what you have to do next (you can check again by seeing the "Pause Menu".
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....and I guess that's it so remember to give me your thoughts on the 4 player co-op feature, and--
Enjoy