I still run Caryatid at 450 but it wouldn't survive a cut below that.
I'd settle down in either Ithaca, NY or someplace tropical. The chances of either ever happening are slim to none, as my husband and I both are chained to NJ through work and family. I hope to buy a weekend getaway cabin in the Ithaca are in ~10 years.
I probably don't need Sylvan Caryatid anymore due to the aforementioned 2-drop rampers, but I can strongly recall all the times hexproof and 3 toughness has majorly come into play, so it's earned its slot. If they keep designing interesting rampers like Channeler Initiate and Beastcaller Savant, it could get pushed out eventually.
While B/R decks in cube do tend to lean towards the aggressive side, I believe that B/R control decks can be successful also. There's so much removal in the colors that I would imagine that they would have a good match up against decks trying to win with creatures. Running cards in the cube to support this archetype is something I like to do, but Olivia seems too slow for most cubes. With enough time and mana, however, she can rule the board.