Love these events and I had an idea for one, that would be on the bloody side.

It would be a race. From the entrance of the ruins of maethin to the big bad nightwalker and back, pk encouraged but looting prohibited.

Adding a time limit would prevent it from being a full on death match at the start.

With all those agro mobs people would have to be smart about how they approach it. Obviously only higher level chars are likely to survive but you could also do it through pine forest, that acacia, southern part of new arboria, ghoul tunnels, trothon, jade vaults, sotran, or aboleths.