What I'd like to know is how PUG abilities would make PLD a better job? Second Wind? Maybe, but PUG is all about damage and does not complement the roll of PLD in their FF franchise. PLD's roll is to take hits and covering allies in a weakened position with their highest def rating from all other job/classes. They've always had access to lower tier white spells so taking it away to do at best more damage isn't really all that effective. From what I've gathered, healing spell generate a large amount of enimty. So much that when I did Sastasha I was tanking as I was building up enimty at crazy speed.
In FFXI PLD tanking by a decent PLD involved throwing out extra cures to make sure they kept hate as cure spell had the lowest recast of the major enimty building skills. Flash 45 sec, Provoke 30 secs, Cures 1-4 seconds. Your job as a PLD is to keep the enemies attention and cure spells are very good at doing this. (Too well IMO if I'm tanking on WHM cause I'm curing too much)