It seems the ideas being discussed focus on possibilities. If I may, I'd like to add my wish list with respect to ergonomics - fully realising that some of these ideas may not be feasable:
- water resistant
- quicker processing speed, so that the breadcrump trail in map mode refreshes instantly
- higher-resolution LCD
- buttons that can be operated more easily (for instance, when wearing bike gloves)
- longer battery life
- "GPS Off"-dedicated key combination (so as to use it as watch when you're on the way, or resting,...) to save battery
- smaller watch (should be possible, if you look at the size of the GPS-chip in the iPhone...)
- direct compatability with GPX
- compatible with future Galileo
The way it stands now, the current version of the GH625 already offers most of the possibilities of the Garmin Edge 500, which sells at 3x the price. It doesn't need much more to overtake the Garmin.
Oh - one more development that I really miss.... and that should not be too difficult in integrating in todays' software... a switch between "north up" and "direction up". Basically, "north up" is what's currently being applied - but when you use the trackback feature or wish to follow a breadcrum trail, it is much more intuitive to have a "direction up" (as in a carGPS). Hope this makes sense.