it would be nice if there could be set a blackout zone around your home like a 5km radius so that your home address could be hidden on the maps you make public or share on facebook
kind of like the one strava has
This is a dumb feature on Strava that doesn't actually stop someone working out where your house is (quite the reverse actually). If the track is cropped at exactly a 500 metre radius from your house, then you just plot two 500m radius circles from the points where the GPS track plot is cropped and where the circles intersect is where your house is! So not really the privacy tool that Strava purport it is, but rather it's worse. If you started an activity 75 metres down the road from your house and equally finished 150 metres away from your house, to hide your exact house location, the Strava 'privacy' zone actually lets people work out where your house is when otherwise they would not if they just saw the whole track.
Basically, if you don't want people to know where your house is, then either don't make GC activities that start finish there public or start and finish you activities just down the street from your house. For my money, I think Garmin are correct not to introduce this inherently flawed feature. I prefer that you can make GC activities visible to your connections but not public; unlike Strava where activities are either completely private or completely public.
[Edit: Anyone concerned about what I've mentioned about Strava privacy zones, there is a quick fix. When creating your privacy zone, just use another address that's near to your house (say 75 metres away) but the zone still covers your own house. That way any would be thieves looking to steal your expensive bike (or whatever) will go to the wrong house and hopefully have a nasty surprise!]
if you read my post properly youll see i say kind of like strava i could also have said kind of like ride with gps as they also provide something like this just thought it was something garmin should look into
I would suggest that most bike thieves/thieves could just about master drawing with crayons let alone circles and complex mathematics and geometry to get a geometric fix on a potential location and are more likely to be opportunist and see you with or without a bike and steal accordingly
Even if for some reason you had such a skill set, it would require accurate printing to scale or software etc etc so all in all a bit far fetched in realistic terms
Depending on where you live whether you be in densely populated area or in the middle of nowhere human observation will always win where a thief is concerned
Some will argue for and against hiding location but a determined thief will always win regardless