The three seasons where
Survivor has used Redemption Island have been similar in structure.
The main difference is that Edge of Extinction doesn't feature a "duel" (between the eliminated contestants) every round. The people who get voted out just keep accumulating at EoE until a new competition is held.
They also seem to be showing us more screentime of the Edge of Extinction folks, compared to the contestants who were sent to Redemption Island back in Seasons 22, 23, and 27. Works for me -- since I agree with the fans who suspect Season 22 was just an excuse to hand Boston Rob a victory on a silver platter.