Elements

[Ashe]

Honestly, the elemental ki changes have confused me as well. For one, I still to this day don't like "Lumokinesis" aka, Elemental Ki - Light, as it seems entirely superfluous to standard Ki while also calling it an element suddenly. Additionally, of all the people that insisted that I simply wasn't creative enough to see the enormous use of it, I don't see anyone taking it (at first glance).

On that same note, I personally feel that Ice and Water should be combined, as to me, they are the same element. The only time I've really seen any game separate those is Chrono Trigger, and that was entirely for flavor reasons. However, I can also understand that controlling water ala Storm could be something entirely different than Iceman, so that's something I can see both arguments on.

Earth I think should be there.

Darkness, I don't. For the same reason that I don't agree with Light being there. The only conception I can see for those would be "Holy" and "Unholy - aka Dark Energy".

But, this is also anime, so logic rules don't always apply, in the absolute scientific viewpoint that you and I take towards things. To show example, Naruto characters frequently replace themselves with a log, even in the desert, a random log, and try to act like that log looked like them for the duration of an attack. You have to look at it and just roll your eyes sometimes.

So you can see why one might entirely disagree with it being a problem.