Ok so For Prison My Unarmed says +7 DMG (from iron arm) which should do 3.5 hearts per hit to People without Armor But It only does half a heart I would really like to see the damage buffs added. For Infection I would like to see automatic XP pick Up. Like when you Kill a Player you automatically get the XP instead of having to Pick it Up this would prevent people from picking up xp from Your kills and also new maps :p
The infection one sounds like a good idea. The only thing I'm thinking of about it is that it might be op on some maps like Nether or Desert where it's very easy to get a lot of zombie kills very fast with a bow... At lower levels, this would level you up very fast, and it might even be too much for higher levels. I once played on a server where this was implemented and went from level 67 to 68 in one round on Nether. Anyways, everything else is a good idea.
That's 10 attack damage. Slightly less then a sharp 5 wood sword. Do you want noobs hitting you constantly with a sharp 5?