I realize we all have our own tastes. Take it for what it is worth but these are the data fields that answer the every day questions I have:
helpful watchface information:
- Full date Day of Week, Month, Day (Tues, Jan 9)
- environment
- current weather
- current temperature
- current humidity
- current wind speed
- day's high-low
- next sun event
- health
- today's steps
- today's distance
- current heart rate
- week intensity minutes
unnecessary watchface information:
- both analog and digital time
- battery remaining (silliest thing on a watchface, tbh)
- Bluetooth connectivity status icon
- graphs/charts without corresponding numbers. Especially if there is no iconography or abbreviation describing its information. If I have a bar chart of daily steps without any numbers, it is just a bunch of bars which serve no purpose. There are a few faces that can execute a graphical representation (ex: Goals by vaw.be uses a long enough line with enough increments to give it meaning and uses iconography and numbers as well.) But most watchfaces don't (eg: Athlete, Combination, Cogwheels, Quantum all by Garmin. They are these tiny bars and charts that are not helpful. I would have to be intimately aware of that watchface to know what it tells me.)
- timezone. I am here. Not there. I don't need to know my timezone unless I'm there. And then there is here.
- altitude/barometer (unless I am on a mountain, glacier, or in an appropriate activity, it is confusing at my desk.)