This quote from BenFTW says it all...
This is hardly a connection between God's grace and Gnosticism. Believers in Gnosticism believe that sin couldn't be imputed to them because they were inherently spirit. They didn't believe they had sin (1 John 1:9; unlike grace believers, who acknowledge their sin but know Jesus took care of it). Sin isn't imputed to us because it was given to Christ at the cross. That is the hyper-grace stance, not in agreement with Gnosticism. It glorifies Jesus Christ and not self.
Those adhering to Gnosticism found comfort/assurance in themselves just like the self-righteous legalistic gospel individuals do. Their assurance is found in themselves. It rather seems Gnosticism and Legalism have a likeness and it is pride. Looking to self as the full measure of assurance, as the means to why one is saved. Unlike those in agreement with "modern hyper-grace", knowing their salvation is not dependent upon themselves but the finished work of Jesus Christ.
The opposition you have against Hyper-Grace theology seems to be chalk full of straw man, and ignorance (respectfully). Every disagreement thus far and refuted continues to be one not posited by those who you would say fall under "new modern Hyper Grace" teaching. I suggest you read a book by a grace preacher so you can better understand what you seem to be so against.
At the moment, you aren't addressing what some might call the "Gospel of Grace" but some imagined gospel that contradicts scripture and grace preachers themselves. You're refuting something that isn't being presented and therefore are wasting your time and those reading. Its pointless, and only further buries people in ignorance to God's grace.