User blog comment:Xilinoc/Ch. 560 - Rages at Ringside/@comment-5551986-20131207204728/@comment-11051098-20131207222441

It's not just you, I think a lot of us dislike the too short battles, and the ones we didn't get to see.

Shorts like
 * Unohana vs. Kenpachi

Off-screens like
 * Kenpachi vs. Sternritters Q/R/Y
 * Kenpachi vs. Royd/Yhwach

Not to mention that a few panels during the first invasion, when Ichigo entered SS, suggests that among others Shinji and Ikkaku fought someone, but those weren't shown either.