Why can't it be a hybrid? I've just started as ARC after main as PLD with some time as a healer. ARC definitely doesn't feel like a support role right now. Just kick back, shoot things, don't worry about anyone else in the party. Which is in stark contrast to tanking/healing where you're worrying about everyone else AND yourself. It's like a holiday from all the stress of PLD - but I digress

I'm still early-game though... I expect the "support" aspect to become more prevalent as I go on, but nothing like tank/healer where the entire party's success depends on your ability to support it.