To be honest there are times when I could use a bit more low end on my fat bike (I love in a mountainous region). It would be nice to have say a 45T in the back and be able to bump up the front from 28T to 30T. I think for a lot of people with fat bikes, a 26t with 10 or 11-42 would be the sweet spot but 26t means direct mount (often not an option) or granny (not the best chainline if doing a conversion, but tolerable. So have this would allow another group or people to go 1x. Personally I am happy with 28Tx42 for sport applications but I wouldn't want to adventure tour with that, I'd like something a little lower so there is certainly a market for more low end with 1x. That said I'd rather go with an internal hub for adventure touring but the derailleur drivetrains are so much cheaper...