It would certainly give the novices a much better impression than they get now. I had a friend quit soon into the game because, due to game lacking general chat, and honestly NN not even being avalaible to most sprouts, his impression of the community was from Twitter and Reddit, which really house the worst scum our community has to offer. He now thinks the whole community is like that and the worst of any MMO. And no, running content doesn't help you get a good impression either at the start, since most people don't even say hi in runs, especially in low level ones where they just want to be out quick.
The only valid point made is the RMT one, but that way they'd be quicker to block and report tbh. Still a valid concern but eh, there was a time when those bots sent us tells, even. Can't be worse.

And to all those who say: I don't want it because I wouldn't use it: cool, next time I'll go complaining about new savages/extremes implementation because I wouldn't run them anywya, so who needs them, right?