Nico has one of those powers that's seemingly reliant on her outside environment to cause damage instead of inner power like most superhumans. Lisa Corven mentioned that Nico is actually weak as far as monster power goes if my memory serves right. Nico's one of those superpowered individuals that starts off being able to do more damage than her similarly skilled and powered peers who will eventually get eclipsed by those with a destructive enough power such as Malik, or Gunvald. Over time against ever-improving adversaries, Nico's power is destined to become less and less of a threat and more of a utility power like Clark. Level Fours and Five can have powers that defy the laws of nature, physics, and perhaps the planes and metaphysics.
At a certain point, she will run out of places to teleport people or summon to people that can damage her target enough to kill them. She already showed immense difficulty fighting Ella and Ella's power isn't even made for DPSing(Damage Per Second). Against someone like Gunvald, or Malik, she would likely die trying to kill them or have to quit and run. So Nico as a DPSer in the future is over.
Power and skill adjusted to being equal with Nico's, Indra would pwn her. Glae would pwn her. Valravn would pwn her. Syla would've pwned her. Light's chosen would've pwned her. Destruction's chosen might even be able to absorb whatever she threw at them. Time's chosen would probably stalemate. Space's chosen could probably cut off her portals or teleport her there instead. Ella might've won in a 1v1 with her. Creation would have a problem with her, I think. Authority would.......bro.

Authority would pwn nearly everyone so I'm not even gonna say because it just isn't fair. But afterwards, Authority.....would dominate and enslave her, make her his personal chauffeur and courier like the Aos' people do to Hexenringes. A correctly trained and focused Danica has far more potential than Nico for DPSing. A perfected Danica actually has the most DPS for a single target in a short period of time period shown so far. Elijah has probably the best DPS for a single attack action so far.