If your destination corporate meeting attendees are fans of sushi hand rolls, they will love a new trend in New York that could be considered quite barbaric. It's a kind of DIY approach to sushi, but your group can rip tuna off the bone and make their own hand rolls with seaweed wraps.
We see this as taking the concept of DIY fancy tacos, where you make your own creations, into a new genre of delicious food. There is a "doing good" component as well. Tuna is one of the most overfished species in the world, so optimizing this delicacy with an option like Tuna Ribs is a unique way to dine as a group.