It is possible that Light Bringer (the official unofficial title of the Hammerhead) could die after ramming. But that would require 6 damage and an Acc, or multiple attacks. Either way, that's a cheap ship taking the brunt of the attack instead of the Lib.
In this case, I think taking 2-3 Hammerheads is better than taking 1 MC30, depending on the cost. The activation advantage is great to have, and it has a much greater threat range. They simply cover more ground, and I could take APT on all 3. I tend to see MC30s in the 80-100 point range, so it's not unreasonable to fit some upgrades on the Hammerheads for a similar cost. Not to mention the generic titles look like you want to run multiples, so there is that.
I'm fully aware pulling Projector Misaligned or Shield Failure is slim even with Dodonna. But there are plenty of other crits that can increase the chances of Light Bringer surviving the attack. Or bid for 1st player and activate it after the target has, then go first to move away.
But it's hard to know what exactly the list will do until the next article reveals all the cards.