Not to derail this into another "type" of thread, but I think that playing very free music, in the sense of not constructing obvious parameters, still had positive sway in the post-BYG age. For example, though the (loft-era) Umezu surely swings and is based on a loose head-solos format, it still has the rambunctious, raw energy of something you might hear on a late '60s Af-Am free jazz record (ditto his more unruly side on Des-Chonboo). Then again, you have people like Clifford Thornton and Joe McPhee whose music from the late '60s/early '70s seems very clearly constructed - so the pendulum swings both ways, often concurrently.
As for Echo, I enjoy it, though the tune "Peace" gets more spins from me.