Status updates on Xiaomi Router 3g [MI R3G]

As this thread has been closed, I'd like to have some feedback about the workings of this amazing device.

1]How are the devices performing in the field?
2] What issues if any are you encountering?
3] Has anyone found a faster installation method that this one?
4] Has anyone figured out how the password generation happens so that we can provision new devices while using always the same SSH package [without having to register the device and download a new one from the miwifi site]?

Thanks in advance.