@CuccorulerSure, if someone uses a terminal on them and they go through it they're through it and that's it.
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@Everyone
And the power levels are fairly balanced at the moment, as we have a few very powerful characters that aren't unkillable. I'm satisfied with where it is now and would like to keep it right where it is. However, you're right that we should start traveling to other worlds. Not every world will(or should) nerf powerful characters, necessarily. But they do make the playing ground more equal.
The point of having Arcadia desolate is that you essentially are forced to go to other worlds to gather resources and complete objectives. So you may be a powerful character, but unless you're a leader type who gets other people to do it for them, you will need to go to other worlds to accomplish most of what you want to do. To progress the plot and increase your own power, its imperative to use Terminals to reach other worlds where you may or may not be weaker than before. Arcadia is critical and is a hub world, but you can't sit there all day- it has no people or resources, its infrastructure is falling apart, and there are some really powerful monsters there.
Further, there are organized factions across the multiverse with a very vested interest in Arcadia, and you will need resources from other worlds to stop them from coming in and enslaving you, or taking over the Planet.
Speaking of, when the plot moves on, you'll be seeing the first of those. They won't be landing on Arcadia near us, but they'll notice you guys eventually. And well, when they do, they're going to try and get you rowdy kids off of their brand new lawn.