Also: In depth-classguides, on which stats to use on which items/gems, different builds (DD Candy Barbarian, Tank-Prowling-Shadowhunter, ...) maybe style guides (many people still don't know you can change Ally styles), guides on raremounts and how to farm them, ...
Also i really hope Trove will implement a questing system and some more NPC's/Secret areas like the shadow hub.