I voted for summoning master.

Honestly, I might have been convinced to vote for something else if they had provided more detailed explanations of each class. Even the limited descriptions that were originally provided were not easy to find when it came time to vote.

So I think that from job title alone, summoning master sounds pretty cool.

As another theory, shapeshifting was a pretty awesome mechanic in Breath of Fire RPGs and summoning is a pretty awesome mechanic in Final Fantasy, so perhaps we've all been overwhelmed by a faction of JRPG lovers.