I was at the Inland Empire regional last week and for the first day I thought that this game was terrible and really boring. But once the eliminations started, I really started to love Aerial Assist. Good alliances in elims are incredibly exciting to watch. 1678, 399 and 4161 had a great flow going and it really showed how great this game can be. It was really exciting to see them pass the ball down the field, over the truss (with a few catches by 399 in there) and scoring at the end with the triple assist was really impressive and awesome
EDIT:
I also think that defense is kinda fun to watch, because even a rookie team can really do something that contributes a lot to their alliance and possibly (temporarily) stop a powerhouse team that would normally just steamroll the rest of the teams on the field. I think the intense defense in this game makes the matches a lot less one-sided when a lower-seeded alliance faces a higher seed.