I've seen the debate on whether Mage Hand can be used without being seen or being cast in an area that cannot be seen by the caster, but my question is can you feel through the mage hand?
For example, a Mage Hand is cast and the caster has the mage hand travel around the corner to a shelf to grab a specific object? I've read that some DM's rule this as a Sleight Of Hand check with a blindness condition and thus disadvantage but that is assuming you can feel what the mage hand is grasping? Heck, if you can't feel the mage hand, you wouldn't even know if you were holding something in the mage hand without seeing it.
Obviously this ties in to being able to only use Mage Hand if you can see what you are manipulating. I love the flexibility of the spell and the imaginative ways it can be used, but it's also a cantrip that can break the game if not properly defined.