So much of the recent cool stuff Apple have been doing with their devices like the customizable home screens last year, StandBy or the Smart Stack on WatchOS is that in the first version there are no other way to configure them than to go into the mode.
I’d much rather have an area in settings to set it up. This is especially annoying for the smart stacks on iOS and StandBy.
For the WatchOS widget stacks it would be much easier and faster to just set it up through the Watch app on my iPhone instead of sitting really still and hoping it doesn’t jump out of the view after each change you make.
And for the StandBy it is just for my setups both at home and in the office just a really weird position (and rather uncomfortable) to sit/stand and configure it.