XP gain is not an issue right now. The biggest issue for new players that I've found (as a new player myself) is gated content. Leveling is gated (I'm so glad I can't take part in the double xp event because they want me to unlock more levels via Limit Break quests), classes are gated (I don't want to get off work and spend all my free time doing an irrelevant quest that adds nothing to the games story just so I can see if I like it or not), even the Trust system is severely gated (it took me hours to run to different cities just to get 3 base trusts..) Make things more ACCESSIBLE, this is the biggest issue with this game. You add all of these great systems like the trust initiative and so forth, but it all takes an absurd amount of time just to get started. I want to get out and explore the world the way I want to, not be forced to run from area to area to collect some item for 3 lines of text that have nothing to do with anything. I don't mind quests, I enjoy them, but making them required for core mechanics in the game is just ridiculous. Why not change them to item rewards or something, seeing as getting armor while leveling as a new player is nigh impossible due to high auction house costs or hoping that a chest you spend 2 minutes unlocking gives you something better than an ether or potion.
If you want to make the game more new players accessible you guys really need to do more than just look at XP gains, I mean honestly..