Simple idea really, if you have any tamed dogs, that aren't seeing and with in a certain distances, they immediately come to you. So instead of teleporting to you like they do now, maybe take that out and just have a dog whistle. And if they are tamed and you go to far out they automatically go home and wait in front of the door for you. Also, there is a small chance that a stray dog may come to you if your in a biome that has wolfs. The dog whistle doesn't have a durability so if your good about it you only make it once and he's what I think the mats would be like.
The string as a necklace and the iron ingots as the whistle.
As good as your idea is, this doesn't have to be in minecraft, because wolves aren't very important in my opinion...your idea is good, and I wouldn't mind this in-game, but it will never be implemented
I'll have to ask a few questions... Since dogs already teleport, then what's the point of adding this? You stated yourself to remove teleportation and add in a new mechanic that summons your dog TO you. Secondly, what defines home? Where I live at in most minecraft worlds, not only would there probably not be a door, but it'd more or likely be inaccessible for one reason or another. Thirdly, why would they use more time implementing this mechanic when it's simple as is?
Enderpearls need more uses! Go to http://www.minecraftforum.net/topic/1584591-ender-dust/ to fix that!
I don't really support this.