Some of the most asked questions I have seen:
• "What are these bars under my character and how do I get rid of them?" Blizzard added the bars and buffs display under the characters as part of the default UI in patch 7.0. You can get rid of it in the settings: Interface -> Names -> Uncheck the Personal Resource Display box.
• "How come I cant zoom out anymore?" Blizzard changed the ability to zoom out, but you can use the MaxCam addon.
• "How can I change these default nameplates?" There are many addons, but you can do some basic changes:
/run SetCVar("nameplateMaxDistance", 40) will set the distance nameplates are visable, 60 is the default
/run SetCVar("nameplateOtherTopInset", -1) SetCVar("nameplateOtherBottomInset", -1) stops nameplates from clamping to the screen