I would only accept a second iteration of Eureka if it simply replaced our current open world content. Basically, they overhaul the FATE system and let you muck around with Pyros abilities. I do not want another relic tied to it. Can it be an option if applied to open world content? Sure. But locking the relic behind another instanced piece of content would be foolish.

Now yes, maybe they will get all the kinks out of Eureka come 5.1, but I simply don't have faith they will get it on the first try. And we're long past the point of waiting almost a year for the devs to make an idea, possibly, maybe, work okay-ish.