One thing I think is definitely missing from all those Narrow Wide chainring is an offset option. Like on my Five, chain line is cool with a 30T chainring (that has a built in offset which is there for chainring/crank/chain compatibility), but it's not as good with a 32T.

Yes I could add a spacer, but I think this is something manufacturer should take into account. I can already see the drawback, it would need a lot more machining and raw material, but to have the opportunity of 1/2/3mm offset chainrings would be cool (and why not offer them with the bolts to the correct length ?

Just my 2cts