Now I know you young people are super smart and have lots of experience in designing and implementing games.
I remember back in 1960, when I wrote my first programs in assembly language, I thought I had INVENTED logic.
But some advice about new gamers from The Old Man:
To tempt and keep new players, you should double the number of level 2, 3, and 4 f2p dungeons. I have listened to the 'general' chat in the harbor, and after rolling 3 or 4 characters, they are bored with the same old quests. They need more examples before they settle down to the actual game: building superheros.
Suggestions:
A rough cavern, with danger of falling, like Brood of Flame
A mostly underwater like Two Toed
Something where 'sneak' is the only way to win.
A level 3 raid.
A boss with healers that have to be killed first.
Your new quest have gotten better and better, but for the lowbies, you need to update your bait.
EDIT
I've been VIP for years, so I didn't realize that the Catacombs was not free to play. This is not a particularly fun chain, but making it free would add 8 quests for newbies.
And as far as BAIT, after suitable advertising make Three Barrel Cove free for a week. Do this four times a year. Show them what they are missing.