The REAL issue with Viper is when you do low lvl dungeons/Trials/ ANYTHING that syncs you down...

LVL60 dungeon and you have like 3-4 buttons to really attack with...
LVL50 dungeons where some original jobs still have atleast somekind of rotation well...... Viper spams 2 buttons......... 2 freaking buttons for attack at lvl50............................... jesus fucking hell it sucks.