Here's your indicator:
OS X is beautiful, (I heard it is used internally in the heavens and rumors say God built a hackintosh for himself)
The more OS X switchers to Ubuntu you get, the more you can be sure you are in the right path. The less you get, the farthest from beauty you are.
Now you can argue with that, as you were expecting a more generic indicator, but sorry, this is one of nature's mysteries
Here's your indicator:
OS X is beautiful, (I heard it is used internally in the heavens and rumors say God built a hackintosh for himself)
The more OS X switchers to Ubuntu you get, the more you can be sure you are in the right path. The less you get, the farthest from beauty you are.
Now you can argue with that, as you were expecting a more generic indicator, but sorry, this is one of nature's mysteries