I don't think the Divisional X-ball field was a very good layout. The dorrito side sucked and was hard to make great plays.
Everything happened down the snake side, with some (not a lot) down the middle.
Better field designs = better standard of play.
I watched some decent NXL, but also got bored with it after a while in comparison to the Divisional stuff.
The NXL seems to have distanced itself from it's fan base which makes it hard to get excited about. I'll never play with guns in the modes they play with and it's not the way every day players play the game. Therefore to me it lost some of the appeal.