Like, you have Zaerog, who looks cool as hell, but he's really not that great, even when cost was lowered from 110 (!!!!) to 60... And Bold Pirate Lord Zaerog's not exactly that much better than Maleficent Dragon Lord form, they are probably comparable...
Bold Pirate Zaerog is better than Maleficent Zaerog as a sub, at the very least. His awakenings might not be as good but he's got the decent active and outright better stats than Maleficent.
Of course, his negative RCV still proves to be a problem, he's still a rather mediocre statstick even after you take the massive increase from the uvo into account + awakenings and he's primarily water which means that he can't really be paired with most good dragons (which are either red or dark) though his dark sub attribute does mitigate that somewhat.
And Maleficent Zaerog, despite having a godlike leader skill in theory, suffers from extremely long cooldown on his active (and since getting zaerog is next to impossible skilling it up isn't exactly an option either) has absolutely terrible stats especially for the 5 million experience curve and only decent awakenings.
Plus, both Zaerogs suffer from the exorbitant cost problem, 60 cost is still the highest in the game, even if it is much lower than the original 110.
GUNGHO PLS