That's an absolutely terrible idea. Trial accounts already have a fair amount of restrictions. I wanted to make sure this game was going to be worth playing before I spent any money on it, so I fully used the 2 week trial period before signing up. Change access to Haven only, and other people in that same circumstance will give up. Changing trial account access areas to suit IDOC spammers is completely absurd.
It´s not just the IDOC scripters. Wherever certain people can abuse trial accounts, they will.
One recent example is the "new" Blackthorn dungeon. Veteran players created trial accounts to be able to afk farm arties in total safety with their Young status monster ignore. And then the devs had to spend time fixing that.
Giving them access only to New Haven and Test Center will fix the IDOC issue, other issues where trial accounts are being abused atm plus it should prevent most if not all future exploits of them.
Spend some time now to code it and they won´t have to spend time later on again and again to fix future exploits.
And a truely new player will do just fine with limited access to NH and TC.
If this happened then the players who like spending their ingame time helping new players would visit NH often because they know that´s where they are. So any questions the new players might have would get easily answered.
And in NH they can train up most if not all skills plus make gold. The dungeon could be tweaked if needed.
And on TC they have access to the rest of Sosaria. Dungeons, Felucca, quests, whatever. Just set some skills, get a suit and out to explore they go.
I´m certain all the blatant cheating/exploits done by trial accounts causes the game to lose more players than trial accounts restricted to NH and TC would.
