Under UDK, I’ve used a lot the Distortion node for translucent Materials, and was very pleased with it. As it is not avalaible anymore in Rocket, is there a new and better alternative?
Translucent materials now have access to Refraction, which behaves much more like real-world Refractive Index.
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Does that get you where you need to be? 
Amazing, thank you for the quick answer! I’ll experiment with it, it seems great.