Are you going to run a server with your mod, Roland? Or will you let us know what it's called or where to find it or whatever? It sounds interesting. I think I'm pretty much borked with the "survive a full day" part ... but then again maybe my chicken tendencies will make me the mega queen of everythingI don't think it would have widespread appeal. For example there was a lot of negativity when loot was hugely nerfed from killing zombies. With no loot and no xp I think a lot of people wouldn't be very happy. It appeals to some obviously but not for a vanilla experience.
I firmly believe that modding is for creating an alternate experience and not for fixing supposed problems. I'm doing this for my own preferences having fully played and enjoyed the vanilla experience. Even though I personally don't like an xp incentive tempting me to not play organically others really love and enjoy the process of accruing experience.

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maybe make it an option to display or not? I kind of like seeing how my experience goes up ... makes me feel i'm accomplishing something. And, it's also a good indicator when the zombie is dead. The server I play on has the zombie get up time staggered ... so them lying down doesn't mean they're dead ... and I usually run up on them right when they decide to get up and eat my face.We might remove the xp popout so you can't tie a value very easily to an activity.