I plan on still practicing with fringe decks and seeing what will work for tournaments. Arabella is a forever deck for me and I will get it to work one day but for now we move on to Golbez artifact storm.
Breach the Bay taught me some important things when it comes to fringe Cedh decks. Some decks can hang but aren't meant in certain spaces. I tried to pioneer a Boros burn deck and it feels great when it works
Magebane lizard, rug of smothering and eidolon effects don't require you to do most of the heavy lifting to burn 120 life points and Arabella helps close those little gaps. However the deck was too slow and while red and white on their own are good colors Boros is not.