Well, at least before he died he finally put to rest the issue of someone being able to use more than two elemental chakras. As now he could DEFINITELY use Water, Lightning and Earth. If Abdul still came to this board I'd totally tell him to suck it!
huh? didn't kakashi alrdy use more than 2 elementals in the very first ~10 episodes of Naruto or so?

bell-training - earth
first zabuza encounter - water
second zabuza encounter - lightning