Viper is not hard, and does not need simplification.

[Darkstride]

Give it a damn mit ability like Shade Shift, even a minor one. Games are allowed to have hard jobs, and high skill ceilings. For the love of the Great Serpent of Ronka don't make Viper easier than it already it.

I actually feel like I am missing an ability from Viper because it has no defensive skill. It's probably because I'm so used to Reaper's Arcane Crest. It's hardly necessary, but I just like having that little bit of extra functionality to break up the DPS tunnel vision. It might be interesting to have a short defensive like Samurai/Reaper that refreshes Noxious Gnash when you get hit.

As for the overall complexity, I do feel like the tooltips and naming are cumbersome while also being too vague. I usually go through and set up my hotbars to max level based on tooltips and then make adjustments for playstyle as level up. Viper took me some time to get it right. While the "just follow the dotted lines" approach is an interesting implementation, I still like to actually know what I'm doing when I press my buttons lol.