There really are no "cons" (other than price) in going to a Dolphin Deck mini. You lose a little privacy and shade (depending on where the Sun is) but gain a much larger balcony. And privacy has never been an issue with me. People may look down occasionally but never gawk.
And the cabin alone is worth the upgrade; sitting area with couch, large bathroom with tub and shower, lots of storage. So I really see no downside to the move.
And don't write off Emerald Deck because of noise: it is not a problem at all. I now prefer the Emerald Deck minis to the ones on Dolphin Deck.