This would be what the previous co-founder of Oculus argued with the management team over - that they were wasting time on Constellation when they had been offered the chance to work with Lighthouse, as a certain exec fought for sitting only as "..room-scale was a dead-end")!
To me its beyond comprehension why people wouldnt use the actual lighthouse solution, since as far as i know its possible (technically and legally).
Didn't read about that part too much so i might be wrong.
In fairness i think hybrid tracking would be far better.
Lighthouses for scalable roomscale and constellation for portable lan party action.