Hello,
one of my favorite Characters is Cassie Sandsmark.
I LOVED the RAGE Idea of Pre-Flashpoint which she displayed with her Lasso and also before..She got stronger when being angry.
Since her lasso doesnt have this electricity powers anymore (it seems so), I think it would be VERY cool to let her have a kind of rage mode.
So like Superman, when he is angry his eyes glow red..Cassie could have an equivalent reaction with the lightning, so her eyes turn in lightning color and she gets stronger and charge her hits with electricity.
I think this could be a nice add, since her lasso seemingly lost this power.