I've gotten a mono vortex deck to the top 100 twice, but before 14 was around. With the life increase, I can tell you that mono vortex is not really a viable option anymore (until a second good 4 star appears). There aren't any usable 2 hits so the bonus is used mostly just for three round winning, which is the only strategy you can field now with a mono vortex deck.
Just general suggestion though, the most important part of a mono vortex deck is Chiara. She is the best possible round 4 play in a vortex deck, especially if you force your opponent to win both rounds 3 and 4.