No, I have problem with PVP combo and abilities set, it's boring.
The fun part of pvp is the adrenaline of a fight vs someone unpredictable.
The boring part is press the same button over and over.
16-20 pvp abilities would be optimal, but it's clear that pvp is a niche and SE does not want to lose too much time thinking how to balance 21 jobs with 20 different abilities.