I'm blinded by Kehaar. It wasn't until the movie that I liked him, when his rude behavior was contrasted with his clumsiness, no indoor voice, and maniacal laughter. That made him funny to me instead of a jerk, so from then on I always expected him to be a scatterbrained goofball. The "rude" part came along for the ride, so when he appeared to be the same way in the miniseries, I thought he was as strong as ever. When the other rabbits didn't react much to Kehaar's unhelpful responses (like Hazel being silent for a moment after Kehaar burps loudly), I imagined they knew and chose to awkwardly look the other way on it, because that would be funny too.
I could count on him to be entertaining in this miniseries whenever he showed up. Saying something funny, or looking cute in closeups, or that awesome moment where he was flying in slow motion. I didn't see or hear much of Bluebell later on, so Kehaar became the comic relief and I think Kehaar did a better job of it. Overall I think he did a good job and was one of the more memorable parts of the miniseries.
The only thing that felt off is his squawk. I know that's what a gull sounds like, but it doesn't sound remotely serious or ferocious, in contrast to how he presents himself, so it doesn't seem like it fits. It did make for a funny ending to his slo-mo flight though.