As a paladin I’ve performed all three roles in dungeons and I have to say

Retribution has felt like the most useful Now before everyone leaps down my throat raiding and dungeons are two separate things That being saidI’ll admit this paladins suffer from the hybrid tax meaning we are not the best at anything. “Especially putting up damage numbers”But what we do is improve others and can switch to any role if need be.For example Let’s say we have a group consisting of a protection warrior, holy priest, frost mage, marksman hunter and retribution paladin.So now your healer has blessing of wisdom to improve his healingYour tank has blessing of light or blessing of might depending on if they need heals”or needs to gain more threatYour dps have salvation to do more damage with less threat or wisdom to help with mana or might to do more melee damage.You gain auras for situations whether it’s retribution aura for your tank or other resistancesYou also gain seals and with this group judgement of wisdom allows your team to regain mana when damaging the target affected by judgement of wisdom or healing with judgement of lightThe big point here is your allowing your retribution paladin the freedom to float between roles whether it’s doing damage helping your healer in times of large damage spikes or slapping on righteous fury and a shield and off tanking a target.I honestly feel runs go far smoother as a damage dealer In all groups that I have joined.