Hard to tell the elitist part of the game to a returning player who's far from being that person.
So what, he can't think ahead? I think stating extra information regarding his future if he starts out is better than hiding the bad news from him. I don't want him to regret the decision of installing the game in this state.
What? xD Casual players doesn't mean they don't do high end stuff and they only "dress up their barbie characters".
Players in general wish to become better at a game they are playing, unless they are treating it as a dress-up or chit-chat simulator. Let's face it, the only one who doesn't know what "casual" means, is you. You are just a social butterfly that only cares about the social aspects, like talking with guildies during some low tier braindamaging dungeon for the 500th time. But that's more of a roleplayer gameplay, rather than "casual".
Casual just means that they play the game less than a NEET or a high school student, but they still want to become better at the game, EXCEPT that in TERA, they can not, unless they Pay to Win. So they are forced to be more like you, just enjoy the social aspects and farm the lowest levels of dungeons for the 500th time, being bottlenecked by droprate that can only be skipped by going into the TERA Shop.