^
Well, for one thing I found Shinn to be the most obnoxious character since B5's Byron. He was just so annoying. But, really, non of the new characters worked. And the whole Minerva crew really didn't inspire much audience reaction. I think that was the problem.
The overall plot of the show was an erratic mess and really seemed to lack focus. I think a lot of that though, was because the writers felt the new crew/characters just weren't working. It almost seemed as if, half way through the show, the new characters were dumped and the old ones brought back in an attempt to save the series. There's like this complete shift in perspective.
All the while, there's this big tangled ball of plot threads that, instead trying to untangle them, they just took out the scissors, chopped them all up into pieces and did there best to glue them back together. The result was what is perhaps the single worst ending to an anime I've ever seen.