Quest Ideas:
Town History - explore the town, meet the NPCs available when speaking to the town guard or something -- Reward some fluff item of historical reference to the town. Collect all the town rewards and turn them in and get an ASC point or title for World Traveller
Hunting Zones - kill a monster in the zone and trigger a quest exploring the area and various landmarks/history of the creature. Maybe learn various tips about combating them, or some silly tidbit of lore. Reward flat exp. Can be cycled so you never know when an area might be active to grant the quest, can only do 1 or 2 area's each week.
Society - Each society gets a little quest for joining rather the current puzzles. Invite by Master can start the quest or you can visit the usual npc to start it. Reward joining the society. Basically replacing the current joining by expanding it to teach more about the society before you join.
Level Based Achievements - Certain levels you gain access to a one time quest which spans a few levels and explores the various hunting options available, maybe include something which goes into detail around the newest profession mechanic. Early rewards might include a choice of new gear from a list, or containers with max l/d that are attuned to the character. Later levels might reward ASC points.
Seasonal Holiday Quests - mini one time per event quests which explore the grounds and visit the npcs, learn about the holiday or culture. Reward a small fluff item designed around the holiday.
Reward Idea's:
Always a fan of exp, whether multipliers or flat rewards
Fluff nostalgia items
Orbs(<---I really love exp)
Quest Points which can be saved up and exchanged for various things.
Exchange Idea's:
Low end:
Customized verbs from a preset list of options
1 use alteration book
various small simucoin items
Mid Tier:
Mid level simucoin items
3 use alteration book
QC vetted customized verb(make your own)
High end:
Player Services
Orbs
x/day items
not really sure here