EW was written to justify the game’s existence more than anything else. If Venat had told the Convocation and they were able to stop Meteion, we would have no game. There’d be no Source, no First, no Varis, no WoL. They wrote themselves into an inescapable corner when they made the Ancients and allowed us to visit them instead of showing us a lengthy memory flashback. If they wanted Venat to still be any sort of decent, they could have had her split between Hydaelyn and herself where the former has all the ego of “suffer good” while the latter laments in solitude at how hard she screwed up. This separation would happen during the Sundering where Venat would be forced out and Hydaelyn would be in control. At this point I don’t care if I’m pulling from other games because other games did this so much better.