IF YOU COULD BUILD A DIGITAL WATCH FROM THE GROUND UP WHAT FEATURES WOULD YOU WANT?

[clearyvt]

Is there a need for a digital watch for sportsman? I've used the humminbird 'fishfinder' and found it to drain the battery in minutes. I have a Timex HLX watch and I use the barometer to trend weather, the compass is useful, but what about sunrise/set, moonphase, tidephase, etc? essentially, what features would you like to see in a digital watch?