I'm here to suggest, a few ideas that could help keep long-term players around, and make the community bigger.

Here are my ideas:
Dynamic spawns!
Make a progressive fast spawn rate with a boss reward at the end!
Example: Yew Lich Ruins, goes 1-2 wraiths > 3-6 liches > lich lord.
The only problem with this current spawn, is it doesn't really keep me or other players around because it's so slow!
Weekly dynamic dungeons!
This would be great fun! The whole shard gathers weekly at an event for a custom dungeon the staff constructs, with bosses and secret traps, mazes; etc.
Town-take overs by gangs of monsters!
I'm sure a lot of you remember this happening on OSI.
Lizardmen, and ratmen taking of brit.
Orcs, ogres, trolls, and ettins taking skara brae, and cove.
Semi-rare magical items.
Such as:
the tribal spear = to force
an orc bow = to force
paladin's shield = hardening
etc.
Please feel free to add anything