7s is good for betting, but as a sport it's just meh and really just a sideshow within rugby union. In fact, there's a good argument it's been detrimental to the sport outside of the traditional rugby nations:
https://tier2rugby.blogspot.com/2020...romote-7s.html
Good re-start to the NRL. Haven't had time to actually watch a match yet, but bets have been good so far and been pleasantly surprised by the prop offerings I've seen.