Heralds have almost no cabal wars involvement.
Heralds have a cabal channel.
Heralds have powers, but not ones that are game breaking.
Heralds have a few veteran players in the cabal that newbies could learn from, ask questions of. Also, herald players are largely not the speed around powering through ranking and stuff types that newer players might not want to be grouping with. They are joining herald usually for the express purpose of having fun/being helpful, not power gaming.
Heralds aren't associated with protecting a civilized area that would make them Outlander fodder, which most of us know outlander players would hunt even if they know they are newbies.
Maran are still killing evil members of the militia and Tir Talath won't keep the safe from that, but the inn & bouncers will.

Why not just make people able to be inducted into herald at level 1, and direct newbies to seek out the eternal star and make the healer's space a hometown for newbies until rank 20 or something. Veteran herald members could send them on quests (Or Olin assigns them random quests up to rank 40 to help them learn, so they walk in and he notices they got a little stronger, and sends them on an errand). Bring me Flontinot's Last Cookie is still my favorite task ever to send people on.

You could even expand herald into fledgling and herald, like squires and maran. So you start off as a fledgling, and once you are comfortable you move up to true herald, and lose whatever perks/restrictions fledgling status bestowed.

Just allow evils to join herald easier than they can now.

Just ideas, I just think anything designed to help newbies needs some veterans involved. Imms aren't always around to watch over them, and CF is easier to learn from people who know instead of two people trying to figure things out from scratch.