Agree that Suga was oh so suave in the first part
, but a quite a bit of a jerk too sometimes. I liked the build-up to the relationship too, it was very sweet. My reservations about the second half of the serial were more on Yabuki, whose character turned 180 degrees into some annoying jerk-cum-stalker, it was getting on my nerves. The change just felt unnatural to me, and didn't square with the Yabuki in the first part. I was kinda hoping he'd end up with Mariko, but am glad she turned to someone else later. With that kind of character in the second part, Yabuki was a major turn-off.
As for Kyoko being indecisive... I guess that was all right for me, cuz I knew somehow she'd end up with Suga, and maybe cuz I was perverse, since I wanted to see some angst on Suga's part
. Didn't like any of her scenes with Yabuki, though, didn't like him pressuring her and she wavering, it sort of went against everything she'd so painstakingly built up (character, career, etc). I loved the part where she and Suga got upset with each other over the malpractice incident at the hospital.
As for the last bit at the airport (after Mariko's wedding), I felt it was a bit redundant, they could have just gotten Kyoko and Suga to move their butts to the countryside.