Not going for
both would be a mistake, imo. I much prefer third person cam in shooters/rpgs and so do a large percentage of players. The visuals are so much more appealing, and there's a much better feeling how your character is behaving in the world, so to speak. And it gives a better sense of your surroundings. First person just feels very claustrophobic compared.
Plus, if I am going to buy cosmetics for my character, I want to see it in action!
So if for nothing else FDev,
add third person to sell more cosmetics 