Hello. I thought I'd make a concise list about what absolutely drives me nuts about these Viper changes after taking it through a couple Experts, primarily the level 100 dungeon Strayborough Deadwalk, so here goes.
1. They gave us no notice they'd remove Noxious Gnash and force you to start only following the glowing buttons making it more braindead autopilot, catering to the lowest common denominator of people who aren't willing to learn the job properly. There was no discussion, and I doubt there was any real thought or planning to how the job would be changed. We were talking about removing positionals before, but reworking how the entire job's combo flows barely a MONTH into the job's life is okay?
2. Removing NG disconnects Dreadwinder- no, sorry, Vicewinder (eugh) and Vicepit from the rest of the kit and even to some degree Reawaken. Dreadwinder/Pit of Dread acted as a combo reset while getting you topped off with your buffs and debuffs very quickly, especially if you got KO'd. NG essentially was the connective tissue between all the main abilities that boosted (as well as helped you maintain timing for) your Reawakens. Now Vicewinder's utility got reduced outside of just hitting it when it comes off cooldown and distracting you from where you left off in the endless combo, and Reawakens are just dump it as soon as you get Rattling Coil and/or 50 gauge like too many other jobs out there. That goes without saying that I think this is just lazy and boring design (Fill a gauge, spend the gauge, fill a gauge, spend the gauge...)
3. Making it an endless combo changes it from only 2 buttons to watch after your starting hit in the basic combo chain (that you chose how to start yourself) in to now constantly watching the hotbar to make sure you don't misinput, which ultimately gets you trapped in a neverending combo that is not only very easy to lose your place thanks to transforming buttons obfuscating where you left off (Reawaken) or shifting your mental focus elsewhere like Vicewinder or the boss encounter, but you don't really have a clean way to exit or break the combo without having to perform up to 5 GCD's to get back up to where you were.
4. There was expression on when and how you apply NG, like do you double up at the start or do you continue alternating? Do you start Reawaken or go for an Uncoiled Fury depending on your remaining time? Did you set yourself up in advance with enough time and/or a Dreadwinder? That kinda stuff made each fight a puzzle to solve, a minigame of figuring out how to align NG and your abilities beyond "Am I close enough to hit it? If not, used Uncoiled Fury."
5. It wasn't replaced with anything, it was just taken out and given a band-aid solution to keep the general rotation going without thinking about the ripple effect it would have.