I hope I could use Titanium Developer without login. And more, I hope Titanium Developer could build apps without adding unnecessary analytics program. Maybe I should study the source code to know more how it works. Just would like to know if there's some easier ways…
It is possible to disable analytics in an application by editing the value in the tiapp.xml file.
With using Ti Developer 'offline', you will need to have launched in first 'online'. I don't think it's possible to launch and use it without a connection or login.