It would make the dual preset mode useful in more scenarios if the One had a clean bypass in that mode too (possibly an additional setting to choose between clean bypass and the tuner for the long press on the footswitch, or use a double-tap for the preset swap and single for bypass/active?)
One can accomplish essentially the same by switching to stomp mode and making sure the stomp is off, but that’s 6-10 seconds of fiddling using fingers and not ideal when performing. Since there’s already a clean bypass in stomp mode this seems eminently doable with a firmware update.
I know the tuner can be set to pass the signal thru but I'm assuming that is using the current model/stomp and not actually bypassing the tone processing.