I don't think you'll see any custom vocations, we want to keep it pure "tibia" and focus more on the rpg aspects.
At the moment there is over 150 custom npc's, who all have a purpose.
There is many books too. In one of the city's you need to finish a quest to gain access to the library, which the books there will lead you to many more quests.
And were still making more!
Getting exp by achieving skill levels is a suggestion. Partly because hunting for exp gets boring sometimes. Other ways of getting exp (from quests?) would be cool too.
EDIT: Something I've always hated was when Cip changed so that you needed a certain lvl to use spells and runes. I HATE IT. It was awesome times when you had a lvl 12 druid with magic lvl 30 and you chilled and created UHs. At that time it was sort of another play-style, nowadays all that matters is lvl. Maybe if you played during that time you understand why it was awesome.
Very cool. But instead of "DESTROYED" why not for example "chop"?