Mirage edge looks like a wall...

Heya,

Title says it all ;) You want more words?
While running around, the edge of the Mirage area looks way too much like some kind of wall of blockage and you end up hesitating or even thinking you can't pass. It just interrupts the flow and doesn't feel nice.
If you're adding stuff; add a button to scale the effect as well, so people can slide it up or down and make it more or less visible up to personal preference, or just don't add even more visual clutter like this ;) A more transparent but fully covered affected area would be better than a hard edge.

Cheerio!