SWAT 4 was really good.
But I highly doubt Levine culled his studio down to a hand-picked few to work on anything they've already done.
I'm not too worried about the folks looking for new work. Bioshock/Irrational was regarded well enough that they'll probably find spots in other teams easily enough.
Maybe they should form their own studio and make something that outstrips Levine's next project.