TheLoremaster wrote:but there's no Edges specifically for Psionics.
Actually, there are about 8 in a certain sense; they're the new Powers added for Psionics since that kind of creates 8 new versions of the New Power Edge.
Also, yeah, like you said, Weird Science has limits on the available powers, so it's pretty balanced as is. Plus, giving Psionics access to the same Edges (effectively) as Weird Science makes the ABs lose some of their uniqueness.
Still, making a psi-crystal isn't anything any of the Weird Science Edges could do for its own AB, so I think something like that (designed properly) should keep the ABs unique and work if the player wants something of their own.