Connect other Arduinos to Yun

Just saw this link:

It provides a way to connect other Arduinos to Yun and share all the Yun features. It is interesting if someone make a 32u4 shield for it, that it will be an ideal Yun clone. Doesn't it !

There are already plenty of articles on how to connect Arduino to a openwrt hacked wifi router.
There is even a thread and blog on connecting a arduino to a yun.
Best regards