PvP in this game is an afterthought and it shows

[Myon88]

That is not a design flaw

It's definitely a flaw of the mode if one role holds a disproportionate amount of the responsibility for success, because it devalues the effort of the 3 other people on the team. If you like playing ranged jobs, you pretty much have to accept that no matter how good you are, your skill will not influence your winrate as much as if you were a healer player. Don't make the mistake of focusing only on the person playing healer, it's all about their effect on the rest of the team.

You sit in a queue for 20 minutes, get in a game and lose on the spot because you got unlucky with the healer on your team. You've lost 30 minutes of time with not a lot of agency to influence the outcome on your part. Or maybe you get lucky and you win, but so what? You won more because you got lucky with matchmaking, and less because of your own skill. Either way, it makes for a very unsatisfying experience for 3/4s of the players in the match.

I've never seen a pvp game built around a tank/dps/heal trinity see mainstream success. If you look at the competitive gaming landscape today, the vast majority of them are all about dps focused gameplay loops - fighting games, shooters. Even in genres like mobas or class based hero shooters, any 'healing' classes there are more like glorified supports than pure healers.

Sadly it's not really something you can fix since this is a problem that trinity-style mmos bring upon themselves. Their class system is baked in and they have to shoehorn pvp gameplay into that. If you ask me though, the presence of strong healing in pvp fundamentally does not make for exciting or fun gameplay, its lack of representation in mainstream gaming is proof of that.