Pros: scenes will have more dynamics to them if all the art in the update goes to 1 scene instead of 2 as it is now, and will feel much longer and fulfilling (I think this will be very good tbh) — I'm assuming what Saxx means as "briefer progress" is 1 instead of 2 sex scenes together with less story progress, and this can very much be a wrong assumption of mine.
Cons: shorter playtime in the update.
Tho as long as the story itself does not suffer (with the exception of "taking longer" to progress as in needing more updates), I think the positive side of this change will be much better overall.
And if there's really one scene per update (again just my assumption alone), we really need to give up on the "reclaiming" scenes, they already make new updates feel mid for reducing the actual NTS scenes to half. Now if there's as much reclaiming scenes with this change as in a couple updates ago, there'll literally be "filler" updates in this game and even I who have never skipped any new chapter will probably end up having to skip those and the game will lose a lot of people in the long run. We are past this point for a long time already too, so this can be a final push to forget the reclaimings and focus on what matters at this stage of the game.