A DD restraining itself deffinitely has an impact on how well a Paladin can hold hate, especially toward the beginning of a fight. So i just disagree with you there.
I also disagree with you that blink/tanks just totally overshadow paladins. On certain fights Blink Tanks are better, on others Paladins are better. Paladin is the master of heal/tanking, and i've already tanked several Nms in abyssea without any healing support and no atma, something a blink tank probably coudn't have pulled off, or if it did, would have been very dangerous. It would be stupid if we were the best tank on everything anyway. It just depends on the situation and what you are up against.
A lot of paladins seem to just want to be the number 1 best tank against everything. That's not going to happen, and to be honest, it shouldn't. Monks need their day in the sun too - and frankly I'm glad to see so many more viable tanks in abyssea. MMOs have a tendancy to become way too dd heavy and overly reliant on one or two tank jobs. IMHO any melee should be able to tank.
A Paladin can do so much more than tank anyway. He can DD well (I don't care what anyone says, they can). They can heal well, especially if they use a staff for spirit taker. They can even play an effective support role with flash and cover. There is nothing wrong with this job, and there is plenty of stuff you can do if you find yourself in a situation where you aren't the best tank present.
But all that being said, I'm not against seeing some buffs
And i woudn't mind seeing Paladins get their own provoke or an upgrade to the flash spell, as long as it didn't allow them to keep the enemy's attention easily no matter what everyone else did.