I understand that the Americas cup lot want to make the event more akin to F1, to pull in viewers who are not interested in sailing per se, but I far preferred the 12 metre era. Match racing in 12 metres was as much akin to a game of chess as a sport.
As to the J class yachts, having had the pleasure of racing on a course which overlapped theirs at the voiles de st tropez in 2013, I can tell you that the magnificent spectacle of being overtaken on either side by racing J class yachts at very close quarters is one that will stay with me for the rest of my life.