This video explains why third-person is generally a negative trait.
http://youtu.be/v7zoVIsIT2A
I've found that it does apply to vehicle simulations, just to a lesser extent. DCS pvp servers misconfigured to allow third person, even if it's just around one's own aircraft, enables pseudo-TGP which allows you to zoom in and spot targets around BVR ranges with a stable camera. P-51D with TGP and the same all-around camera system as the F-35? Sure! It's a super realistic simulation, after all.
I hope Frontier sticks to their design choice of having no magical invisible/intangible/invincible external camera. I'd love a camera drone though, at least then it's an actual object that exists and has to abide by the laws of physics, and well, existing at all. It would draw ship power, it could get blown up, have a limited operating range, and all of that. Seems fair. I'd target those first going up against anyone using one.
Nice vid. He makes some excellent points.