I think the aces ordinance is where we are headed. It's real predator, fat Han, is going to be ran out on Z swarm fears.
I don't believe a lot of people have experienced dead ace or stressbot or IG in one exchange, least of all in a tourney. It's still my conviction that there are many naysayers that can't imagine what an alpha strike does.
In Wave 5, I spent a while running three TIE Bombers and an Interceptor. I've blown up YTs in a single round of firing, and with Guidance Chips a list like that just got a lot nastier. I've played with and against the Blount swarm. So I'm not underestimating the alpha strike.
But (e.g.) the Blount swarm is a pistol with a single round. Say you're up against a list with Whisper, Omega Leader, and Omicron + Palpatine. Which target do you take out with your alpha strike? I'm confident that Whisper can solo five or six low-PS Headhunters even if you wipe the shuttle off the table, even without Omega Leader's assistance. So maybe you shoot at Whisper instead? But it's pretty hard to get a reliable arc against her, and she's capable from closing from beyond Range 3 to Range 1 in a single round, so that might not work either. And whatever you shoot, the rest of the list is willing and able to eliminate your Headhunters at a pretty rapid clip.
So let's assume a friendlier matchup, then: maybe Super Dash and Miranda + Threepio. But again, who do you target? They're almost certainly going to kill a Z-95 before it shoots if they want to (including Blount, if he takes anything other than VI). So then the remaining 4 Bandits kill Dash off, and then... Miranda has an uphill road, for sure, but she can use SLAM to carefully pick her battles, and she'll kill a Headhunter every other round she fires.
Or maybe Dash and Miranda both rush your Headhunter formation instead of proceeding into a stately merge, leaving some ships without range or without arc for firing their missiles. With boost and SLAM, they can definitely do it, throwing your jousting plan into disarray and forcing you to K-turn while they break off.
It will be a strong list, no doubt about it. But I think it's going to work like so many other spam lists, including the current 4x TLTs: when it beats someone it does it thoroughly and quickly, but even in a favorable matchup there's a lot opponents can do to exploit its weaknesses.