I'm admittedly not the best Melee player but I really like positionals, I think the real issue a lot of people are having is the fact we can't orientate the positional on our hotbars in a way that makes sense to a lot of us.

For me on my other Melees I set up my hotbars so my Flank positional is on the first column while the rear position is on the second column like so:
1 Flank 2 Rear
1 2
1 2

As a visual learner this is how I make sense of positionals and not being able to do that for Viper messes me up, so not being able to bind Steel Fangs/Dread Fangs, Flanksting Strike/Flanksbane Fang and Hindsting Strike/Flanksting Strike separately does make the job harder in that regard.

So i just want to reiterate that the job doesn't need less positionals, but rather a little more flexibility with how we set up our buttons. The unique draw of Viper isn't harmed by this as plenty of other buttons still transform into others but for those of us who are more hotbar orientated that would be extremely helpful.