PVP type possible?

Ever play Asherons Call?
Bael'Zharon
Can players have this power? Are you able to turn a Unique Boss into a player controlled avatar? A middle ground to PvP where both players are in the same map but are visible to
Each other as a special Unique boss that roams. Maybe yours does but you simply lose the encounter. A more hardcore mode base on choices.
I’m
Thinking of a challenger interaction with Champion NPCs that allow you to choose many aspects of the fight. Choices that are made on the field while Champion influenced, choices in town and randomly including special gamble/choice NPCs. Choices that narrow down your fight difficulty, rewards, and fight outcome.

I have better ideas but my words and skills with video not able to share idea.

Maybe this development can lead into players able to link Maps together to create a 4x larger map (or more)
With random party members? Having the choice to play with others by accident….

This multiplayer accident. Killing monsters doesn’t completely clear the mobs, the killing drives the energy from one player to the other, in the map. This way it isn’t about catching up or splitting up. Instead there is independence. So mob clearing is a push and pull.