I'm using the miCoach pacer by Adidas with my Forerunner 610 beacuse of the missing features on the garmin sites that are available on adidas.
The great value of Adidas is the possibility to create professionals training plan by selecting an activity type and a goal. I think this feature should be very appreciated by the Garmin connect's users.
It should also be useful to be able to interact with other users on garmin connect, like exchange messages, follow other users activities, search users by location/activities, something like a real community, where users are able to create groups by acitvities or goals, and compares members results with a sort of ranking per week or month, or create virtual race where users can subscribe and partecipate.
I've seen other sites, like MovesCount by Suunto and Polarpersnaltrainer by Polar that have most of these feature, so why don't insert also in garmin connect?
In my opinion, garmin products are the best on the market for fitness, but the community/social networking is now an added value of every product, so is one of the requirements taken into consideration when you make the choice to buy a product
Edika