Should not be forced in my opinion, there should also be mouse look and more than one 3rd person camera angle as well. It might not be realistic but that would greatly improve situation awareness for dog-fighting, and it would be very useful for those who want to make videos.
Examples:
http://youtu.be/P36KIwaHcAw
http://youtu.be/toXSv-dBIw8
http://youtu.be/IX6VGvwHG1g
http://youtu.be/JOTDI5yiaWc