If anything the game needs a real dot class. Affliction warlock was my favorite spec followed closely by demonology in wow.

When I played in arr summoner had a ton of dots if I recall and when I played again in stormblood I was pretty disappointed seeing theres only a miasma and bio.

Furthermore the game needs to display dot ticks much better, they don't even show up in the combat log and you can't see them on the target unless you turn on everyone elses damage as far as I know (gl finding whats yours in the sea of numbers)

and finally speed needs to make them just tick more often in the same period of time instead of just ticks harder, maybe it would finally be a stat that isn't basically useless except for blm and maybe some minor gcd breakpoint people try to reach.