Don't mistake my statement that PLD has several engame uses now (which it does) for saying the enmity system is working well, I totally agree that it's still broken as a joke. THF transferring hate isn't even very effective now, once the THF and PLD reach enmity cap, which doesn't take long, the THF will have enmity as long as he's meleeing.
Rng are admittedly the exception, but that's because of a combination of their plethora of -Enmity sets that are good on WS, and gaining no enmity from simply shooting, because of Decoy (and camouflage when decoy is down, tbh not sure how much of an effect this has, but seems to do something) So they only have to stay under the enmity cap enough to WS occasionally, between -enmity gear on WS and stealth shot, they can MOSTLY manage this.
Rng have to watch their hate still, they DO need to stop WSing, not barrage, or stop shooting altogether if Decoy is down sometimes, melee DDs simply aren't in that position, it's more efficient for them to pull hate (at least while their damage mitigation tools are ready) than to stop DDing, in fact it's probably better for them to die and reset hate than to have their back turned for the same amount of time, etc. They simply don't have the enmity tools that Rng does.
In conclusion, yes, fix Enmity plx.