Plethora comes with several other modules which allow interacting with the world
The neural interface can be put in your armour slot and interacted with like a computer. Modules and other peripherals mounted on it get full access to the player.
You can fire lasers
You can attach the neural interface to mobs too: and control their movement.
Squid with frickin' laser beams attached to their heads!
All modules have an in-game use too.