RE: How crazy/strong they can be:

It all varies on application, honestly. The uses of attributes can be messed with by the user, and the only real factor (other than straight practice) is imagination.

But if you try something like 'vector' or 'strong atomic force' or what have you, I'm probably gonna say... No? I mean, it'd have be weaker relative to narrower points of focus, but it's still a bit iffy.