> 2. A relaxed interview, like above, in neutral ground like a coffee shop. I use the walk from office to coffee shop to handle company questios, and the standard interview stuff,

Perhaps that is relaxing to you and most people but not everyone. Coffee shops can be very distracting because you hear other people talking and walking by and some even play music. Perhaps you want to screen out such candidates anyway so it doesn't matter much. But you are also screening out a lot of skilled developers who don't function well in distracting environments.