Honestly I feel like we would probably get lockable instances more likely if anything. It'd be more useful, at least I think it would be.
Converse with fellow players
I already have a class that's level 20 that I use for Gigantix (which isn't often), I'm just trying to mine minerals, do dailies and junk. Not like I'd really want to pitch in with people being like this. They're legit telling people who are in the area at all to get lost even if they want nothing to do with Gigantix.
Ever since the Gigantix appeared, the game has been flooded with toxic people who will harass you at any chance they get if your class isn't at max level. I've never seen so much salt in PSO2 until now and it's making it to the point where I have more fun reporting the meseta bots than I do actually playing the game. If I wanted to be harassed and be gatekept by other players I'd play Destiny 2 or World of Warcraft, I'm just here to have fun for crying out loud.