When browsing list juggler it becomes pretty clear that swarms have fallen far out of favor in the last several months. Even in the rare cases when you see them in tournaments, they rarely take top spots. This change has happened very quickly, because even in 2014 Worlds, which was crawling with Phantoms, a lot of TIE swarms and mini-swarms made it to the top brackets. I mean, dang, even Dallas Parker is running a two-ship build these days...
Former swarm players, why don't you run swarms anymore?
1. Too many high AGI ships out there these days.
2. MoV rules hurt swarm players in timed matches (especially vs. large ships).
3. 60 minute rounds don't give enough time to play carefully (i.e. playing strategically, placing lots of dials, etc.)
4. Arc dodgers like Phantoms and Autoceptors make swarms too difficult to pull off these days.
5. I'm bored of swarms.
6. Other reasons...?
EDIT: For the sake of this discussion I consider a swarm to be 6+ ships. Many of you have made the good point that 5 ship rebel builds are very popular, which is definitely true, but a squad with 3 or 4 Bs plays very differently than a swarm of 6 or 7 Zs or TIEs IMO, so that's kind of a different discussion.
Edited by cyclopeatron