AFCIs were required in bedroom circuits because in the majority of electrical fires that resulted in death, the people were in the bedroom. Asleep. Think about it...... You spend most of your time in your home in the bedroom sleeping. Ergo, for some silly reason the NFPA decided that's where you should start AFCiing circuits. Never mind an electrical fire can start anywhere in a home and still kill you. Guess that's the conclusion they finally came to and now we have AFCI all through the home.
Personally, I don't see any difference between putting a panel in a bedroom as opposed to the garage, basement, etc. Many an apartment building I've done all the panels are behind the Master BR door. Yea, someone can hang their bathrobe on the back of the door so it's right in line for a nice pretty arc. But the same holds true no matter where you put a panel... someone will put something flammable in front of it.