Taking a look at PLD and what could be a quick(er) fix.

[alimdia]

If a Paladin could pull off an 1200+ hp heal,

wait a second... DO YOU EVEN PLAY PLD? my pld heals for 7-8k.

Drks have 2 aoes, but they're really similar.
sword oath increases your dps by like 15-25% compared to no oath just because of the auto attack potency increase. 15-25% compared to 5% and 15%

featherfoot sucks
haymaker sucks
no space for mantra

You said pld sucks at aoe. And thats why in A2S, pld usually gets 1-2 mobs while war/drk gets the rest. Playing to your strengths yo.