I don't find Sigrun to be terrible, just a time sink, which I have plenty of, good sir. Her water affinity is extremely appealing to me, especially since she's a Seraph Knight, which inherently lacks offense/defense. I honestly don't give 2 shits about tier lists, I go with what classes are good, then I make my team.
And besides, it was a joke, I thought it was obvious with the whole "I'll complain online about it!" bit...