Thanks to wesleywh it actually isn't so hard to achiev. At least getting started working in that direction.
invector.proboards.com/thread/1908/free-unet-multiplayer-scriptI'm not sure how good it works because I'm still working on it. But with the Script to get Multiplayer to work you automaticly allow different instances of players.
I'm not 100% through with all the changes wesleywh made in his Networking Script but they should certainly help to make some of the scripts work on different Characters.
With the Check box "public bool useInstance = true;" one can deactivate the Instance function.
And by doing so one could add the AI Controller and the Third Person Controller to a certain Object and deactivate everything that is needed for the 3rd Person Controller while it should act on the AI FSM and the other way arround.
The biggest problem I see is that it would gain two Health and sometimes use its Stamina and sometimes not. Oh and there are still Inventory/Item problems.
The second Problem is that the UI need to switch depending on the Player and you need to transfer the informations from there.
But if you don't need the Inventory and manage to remove the Health from both components and add a Healthcomponent that both scripts can use you're nearly good to go.
You could also totally remove the UI and work with Healthbars over the players head which are similar to the ones the enemies use you could also do that.
I hope that this information can help to work a bit in the direction.
I'll certainly will work more in the direction.
But as our Invector Admin said it certainly is a template customization.
That's why I don't know how I could share my progress like wesleywh did if I manage to remove certain components or add new parts that help to make a character switch possible.
I will certainly take some time till I manage to make the customization and even if I manage to create one I can't post it right away.