I'm in the middle of the Seattle vs DC game. It's great to see a more polished XFL back.
For the unaware, the XFL has modified traditional NFL rules to prioritize a faster, leaner game. A 25s play clock (down from 45s with the NFL), a modified kick off where teams are five yards apart, with the kicker and receiver on their respective 35 yard line (teams wait until the receiver touches the ball before they can move.)
All in all, this game is pretty fun. The pace isn't crazy fast compared to the NFL, but you definitely have fewer long breaks.
The broadcast is also great. They're constantly detailing the differences in play. They also have more interaction with coaches and players, which is fun.