Still, i see no reason at all to cut one of the strongest cards of the deck. Keep in GSZ and play it alongside vial. Fabian Moyschewitz, one of the higher rated german eternal players just used a decent list in Nuremberg
click.
That's about the lis twe have been playing before the printing of GSZ as a green splashed DnT before MAverick was actually taken up to top Tier via Green Suns Zenith and that deck became significantly better with the GSZ, even though you miss the vials from time to time.
I fully understand your approach but i don't see how Avenger helps against RUG.