Seems like it takes out the point of the housing ward. You're not on an isolated island, and out door decorations are meant for other players to admire. I know I dash through people's yards all the time when I'm making a beeline to the Mist Beach and am not near an aether. Would be horribly inconvenient if I'm about to parkour hardcore to a roof and get hit with an invisible wall.

Also I doubt blocking people outside your gate will help get rid of the creep when they can just stand there and twerk outside your doorstep. You're still seeing them after all.