personally I think some of the features in it should stay
such as
Tinted glass
the above ground strongholds
sheep floating when fed golden apples (though you should probably make a limit to how high they can go)
the Redstone bugs (they should probably be much rarer though
chickens swarming and pecking you could stay as long as they spawn new chickens less often and do no real damage. it would be a nice nod to the Legend of zelda series
the torches burning out could still happen just much rarer
mud, hay bales, coal blocks, slime blocks should stay if a use can be found for them
such as
Tinted glass
the above ground strongholds
sheep floating when fed golden apples (though you should probably make a limit to how high they can go)
the Redstone bugs (they should probably be much rarer though
chickens swarming and pecking you could stay as long as they spawn new chickens less often and do no real damage. it would be a nice nod to the Legend of zelda series
the torches burning out could still happen just much rarer
mud, hay bales, coal blocks, slime blocks should stay if a use can be found for them