[BahamutKaiser]

Their designed to offer different advantages and roles beyond just elemental affinity, so if your any good, you will be using all of them properly for the right situation.

I think wind looks the coolest, although they are all pretty nice. I do hope that they diversify with at least 2 summons for each element though, as the role neccessary may not be the right element for the opponent as well, some diveristy will allow for different looking creatures which will satisfy more interests, and also ensure some flexibility to operate the maximum value.