I might just be me, but the way how the arc changed as soon as the Shinigami appeared felt very.... bad. I'm not sure, but I think that this change was a result of the fans criticism against this arc. If Kubo gave into the fans demand, I'm truly disappointed. It always lead to a far worse result to an arc. In fact, this is turns into another filler like arc.
As far as I'm concerned about the fights:
Kenpachi vs the Butler: "Fu*king Boring" (Thank god it ended in a second)
Ikkaku vs Jackpot guy: Not the slightest interesting
Hitsugaya vs Yukio (I think that was his name): Geez, why is Hitsugaya even here!?
Rukia vs Riruka: Not interesting, but quite amusing.
Byakuya vs Tsukishima: Not very pleased, and for some reason, I get the feeling that Tsukishima won't be killed by him.
Renji vs Jackie: Interesting. I mean, It's been a while since Renji kicked some ass.
Ichigo and Ishida vs Ginjo: I'm quite pleased that Ishida joined the fight instead of Ichigo fighting alone.
I really hope that it gets better later.